!on. In UM ekain-pump, the "buttons" 
substantially pistons u( A lifting pump. 
np. which forces water through a nplnU p 
lean Krew. the portions of the wa 
; I- liiinl Hi' liquid are the analogui 
pumpt, acting by direct pressure o 
>, or baring a turblnate form, the i 
pump 
"buttons" on the chain 
rln thcjpi'ro/- 
|, :i--.i-., II-, III.' 
.......... _____ j screw, the portions of the walls of the pas- 
aage lying lu-himl Hi" liquid are the analogue! of pistons. 
In rotary pumpt, acting by direct pressure or by centrif- 
ugal force, or baring a turbinate form, the analogues of 
pistons are the rotating vanes, buckets, etc. In propeller- 
jmmpt, the blades of the propeller-wheel represent the 
pistons. In pumps of the monlt-jiix variety, including 
steam vacuum-pump:, the pulsometer, etc.. the represen- 
tation of the piston Is a volume of steam which first presses 
upon the liquid, and is then condensed and replaced by an 
equal volume of liquid, which In its turn is displaced by 
another volume of steam. In jet-pumps, the analogue of 
the piston Is either a liquid column moving At high velo- 
city to force other portions of liquid or vapor forward, or 
a column of air, gaa, or vapor, which, In the steam Injector 
and ejector, Is (team that Is condensed to a liquid during 
its movement without much reduction In its velocity.) 
2. [< pump' 1 , t).] An artful effort to extract or 
elicit information, as by indirect question or 
remark. [Colloq.] 
I was the easier Indeed because, for all her tnimpt, she 
gare no hints of the key and the door, Ac., which, hail he 
communicated to her, she would not have forborne giving 
me a touch of. Richardson, Pamela, 1. 171. 
Atmospheric, centrifugal, centripetal pump. See 
the adjectives. Circulating pump, the pump employed 
to move a current of cold water through a surface-con- 
denser. In a marine engine the water is taken from the 
sea, made to circulate through the condenser, and then 
thrown overboard. Dental pump, a device for freeing 
the mouth from saliva during dental operations. Also 
called talim-pump. Differential pump. Bee ili/rren- 
tinl. Double-acting pump, a pump which, Instead of 
discharging and inducting liquid In lUoutward stroke only. 
both Inducts and discharges at each stroke. An Inlet- and 
an outlet- valve is arranged at each end of the pump; the 
piston Is solid and valveleas ; an Induction branch-pipe or 
passage leads to each inlet-valve ; and a discharge branch- 
pipe or passage leads from each outlet-valve. Eccentric 
pump, a cylinder In which revolve a hub and axis ar- 
ranged eccentrically. The water enters by one opening 
and escapes by another, expelled by flaps upon the hub, 
which serve as pistons in the space between the hub and 
case. Jack-head pump, a pump baring Its delivery-pipe 
attached to the pump-barrel or -cylinder by a gooseneck 
connection. This form of attachment Is used especially In 
lifting-pumps for 
raising water from 
deep shafts or bor- 
ings. Mercurial 
pump. See mer- 
cury air -pump, un- 
der mercury. 0^- 
clllatlug pump, 
a form of pump in 
which a vessel In- 
closes two valved 
sectors or vibrat- 
ing chambers that 
oscillate upon a 
pivot under the 
control of a handle 
or lever. It oper- 
ates by the oscil- 
lation of the sec- 
tor-shaped pistons, 
which alternately 
suck water Into and 
discharge It from 
the Inclosing ves- 
sel Pendulum 
pump. See pen- 
dulum. Pump- 
joint machine, a 
machlnefornttlng 
togetherthe joints 
of pump-stocks, by 
boring out and 
turning down the 
joining emit* to 
form a socket- 
joint Rotary 
pump, any pump 
that acU by the ro- 
tary motion of the 
part or parts that 
force the liquid 
forward. See cut 
under centrifugal. 
Saliva- 
4844 
Cf. E. AM. plump = Q.plumpen, pump.] I. iw- 
Iniiis. To work a pump; raise water or other 
liquid with a pump. 
Not so, oh Charon, wanting to defray, 
Thou hast my palues, I pumpt part of the way, 
Then tug'd at in 1 oare, being that only soule 
emulating Pump. 
-r^, boa, of the pump is made In two tec 
tlons, and *, flangeil and bolted togvdMr. 
Th induction-chamber e has upwardly open- 
mifMM CIlnirlA Ing vale rf. rf. through which water i drawn 
*" by DKlUaUn the kindle A cainlng corre 
acting Pump, ponding otclllatloa oT the pUlon//. which 
In contradlstinc- turn* upon /"ai a center, and is provided with 
tlon to double-Get- rale* i.t, opening upwardly into ihe chamber 
tnrt nttntn m rtnmn ' intlt whkh the water ii forced at each sue- 
J ce!.e filiation ..n.1 ^.charged therefrom 
that Inducts and through the eduction-opening / 
discharges during 
one stroke only the outward stroke. Compare ttroir. 
Splml-pump. Same as Archimedean tcmr (which see, 
under Archimedean}. Steam Jet-pump, a jet pump In 
which water is driven by steam. " In fhe case of tho'lnjcctor 
this form of pump Is used to feed water to the boiler. See 
injeetoriai ejector, which ire special names for steam Jet- 
pumps. Steam vacuum-pump. See vacuum-pump 
Submerged pump, a pump the barrel and valves of which 
are submerged, while its pump-rod and discharge-pipe 
extend above the surface of the water In which the puni|>- 
barrel Is placed The principal advantage pertaining to 
submerged pumps Is that their working parts are not 
liable to be obstructed by the formation of Ice (called 
fretting up), as Is the case with pumps exposed to effects 
of very cold air TO fetch a pump. See /fiYM. To 
prime a pump. See prime. (See also air-pump, chain- 
pump, fUer.pump. farce-pump, jet-pump. ) 
pump' (pump), r. [= I). IMHII/H'II = G. IIHIII/H n 
= &w.jnunpa = I)an. pumpe; from the noun. 
Who in i In barge did neither mourne nor houle. 
Beywood, Dialogues (Works, ed. Pearson, 1874, VI. 238). 
Mariners, . . . while they pour out their vows to their 
saviour gods, at the same time fall lustily to their tackle, 
and pump without intermission. 
Warburton, Divine Legation, III. (',. 
Pumping of the barometer, the oscillation of the mer- 
cury intne tube of a barometer, resulting from sudden 
movements of the Instrument or sometimes from the me- 
chanical influence' of blasts of air in compressing or rare- 
fying the air when the barometer Is placed near an obstruc- 
tion. At sea, where the barometer Is subject to the pitch- 
ing and rolling of the vessel, pumping is especially trou- 
blesome, and, in order to diminish it, marine barometers 
are constructed with the tube contracted for a considera- 
ble part of Its length. 
il. trann. 1. To raise with a pump: as, to 
pump water. 2. To free from water or other 
fluid by means of a pump or pumps : as, topttn>2> 
a ship. 3. To elicit or draw out by or as by 
artful interrogation : as, to pump out secrets. 
Ill stand aside whilst thou pump'tt out of him 
His business. B. Joraon, Tale of a Tub, Iv. 8. 
4. To subject to a pumping process for the 
purpose of extracting, procuring, or obtaining 
something, such as money, information, or se- 
crets. 
Here 'tis too little, but 'tis all my store ; 
I'll in to pump my dad, and fetch thee more. 
Randolph, Muses Looking Glass, II. 4. 
Not to rove, and pump one's Fancy 
For Popish Similes beyond Sea. 
Prior, To Kleetwood Shephard. 
I am going to pump Mr. Bentley for designs. 
WalpoU, Letters, II. 264. 
He ... finally made a motion with his arm as if he 
were working an imaginary pump-handle, thereby Inti- 
mating that he (Mr. Trotter) considered himself as under- 
going the process of being pumped by Mr. Samuel Weller. 
DieJcent, Pickwick, xvi. 
TO pump ship, to urinate. [Low.] 
pump 2 (pump), ii, [Prob. < F.pompe, pomp, or- 
nament, show (> IjG. pump, pomp, show); cf. 
G. pamphoseii, wide pantaloons, < (LG.) pump, 
pomp, show, -I- hoxen, hose ; pumpsticfel, a 
large, clumsy boot, < (LG. ) pump, pomp, show, 
4- stiffel, boot : see pomp. For the form, of. 
pumpet torpOtHpet.] A low shoe or slipper, with 
a single unwelted sole, and without a heel, or 
with a very low heel, worn chiefly for dancing. 
Thy frttmpt. fa white as was the milk, 
And yet thou wouldst not love me. 
OrreiuUeret Child's Ballads, IV. 242). 
Thou shall not need to travel with thy pumpt full of 
gravel any more, after a blind jade and a hamper. 
IS. J onion, Poetaster, 111. 1. 
The usual attire of a gentleman, viz. pumpt, a gold 
waistcoat, a crush hat, a sluun frill, and a white choker. 
Thackeray, Book of Snobs, i. 
pumpage (pum'paj), n. [< pump 1 + -age.'] 
The amount pumped ; the quantity or amount 
raised by pumping. 
The pumpage for the year averaged 69,658,969 gallons 
per day. Sanitarian, XVII. 110. 
pump-barrel (pump'bar'el), n. The wooden 
or metal cylinder or tube which forms the body 
of a pump, und in which the piston moves, 
pump-bit (pump'bit), n. Same as nose-bit. 
pump-bob (pump'bob), n. In a steam-engine, 
a form of bell-crank lever serving to convert 
rotary motion into reciprocating motion, for 
operating a pump-piston. 
pump-bolt (pump'bolt), n. A toggle-pin used 
on fishing-vessels. [Massachusetts, 1 . S.] 
pump-box (pump'boks), n. 1. The piston of 
the common pump, having a valve opening up- 
ward. 2. The casing or cap of a pump __ Low- 
er pump-box, the casing of the lower valve of a pump. 
Upper pump-box, the casing of the upper valve. 
pump-brake (pump'brak), n. The arm or han- 
dle of a pump, more particularly that form 
which has a horizontal hand-piece at the end 
of a lever. See braktP. 
pump-cart (pump'kart), M. A vehicle carrying 
a pump and reservoir, used for watering and ir- 
ri gut ing. E. II. Kniijlit. 
pump-chain (pump'chan), n. The chain of a 
rli:mi-piiinp. See fhiiiii-i'inii/i. 
pump-cistern (wunp'risTtArB), . 1. ffaut., 
a cistern over the head of a chain-pump to re- 
ceive the water, whence it is conveyed tnrough 
the ship's siili- by the pump-dales. 2. A con- 
triviiiici' to pri'Vi'iit chips ami other matters 
Iroin ^'I'ttinu' tit and fouling tin- cliiiiii-pninps. 
pump-coat (pump'kot), n. AVivf., a canvas 
cover fiistfiu-d about a puuip, and naili-il to 
pump-kettle 
the partners, to prevent water from running 
down its sides. 
pump-dale (pump'dal), n. Th^discharge-spout 
(originally and still commonly a trough) of a 
pump, which directs the flow; specifically, a 
long detachable hose or tube used on board 
ship to conduct water from a pump across the 
ship and over the side. Pump-dales are also 
used in tanneries to convey tan-liquor pumped 
from one vat into another. Also called dale. 
pumped 1 (pumpt ),j>.. [< pump 1 + -ed".] Out 
of breath; panting; breathless: sometimes 
with out. [Colloq. or slang.] 
Darkness began to set In, the artillery horses were 
pumped out, and orders were given to retire. 
W. H. Jluuell. Diary in India, II. 370. 
pumped 2 (pumpt), a. [( pumpV + -^rf 2 .] Pro- 
vided with pumps ; wearing pumps or low dress 
shoes. [Rare.] 
All the young gentlemen tightly cravatted, curled, and 
pumped. Dickent, Dombey and Son, xlv. 
pumper (pum'per), H. [=G. pumper; a,apumpl 
+ -/!.] 1. One who or that which pumps. 
The flame lasted about two minutes from the time the 
pumper began to draw out the air. Boyle, Works, I. 28. 
2. A mineral-oil well from which the oil must 
be pumped up, as distinguished from one from 
which the oil issues in a natural jet. 
pumpernickel (pum'per-uik'el), n. [< Q. 
pumpernickel, formerly also pompernickel, orig. 
a heavy, blockish fellow, hence applied to a 
coarse, heavy bread ; < pumper, the noise of a 
heavy fall (< pumpen, fall, plump: see plump 
andpi/wp 1 ), + Xiekel, a popular abbr. of the 
common personal name IneoUHU, Nicholas: see 
Nick*, nickel.'] A kind of coarse bread made 
from unbolted rye, used especially in Westpha- 
lia. It has a little acidity, hut Is agreeable to the taste, 
though not very nourishing. Also called bombemickd. 
pumpett, " See ponipet. 
pump-gear (pump'ger), n. A'aut., apparatus 
employed in pumping. 
pump-handle (pump han'dl), n. The handle 
or lever attached to the piston-rod of a pump 
for moving the piston up and down. 
She 's live and forty. She 's red hair. She 's a nose like 
a pump-handle. Thackeray, Book of Snobs, xl. 
pump-head (pump'hed), n. The cap or top of 
a chain-pump, which serves to guide the water 
into the discharge-spout, and as a cover for 
the pump and well ; a pump-hood. 
pump-hood (pump'hud), M. A semicylindrical 
frame covering the upper wheel of a chain- 
pump; a pump-head. It directs the water into 
the discharge-spout, and prevents the throw- 
ing out of part of it by centrifugal force. 
pump-house (pump'hous), . Same as pump- 
room. 
It Is customary to begin the morning (Bath, 1766] by 
bathing, which continues from six till about nine ; the 
company then repair to \.\\e pump-houxe, some to drink the 
hot waters, but more for pastime, as they are here amused 
by a band of music, which nils up the Intervals of wit 
and pleasantry. Lit.- aj Quin (reprint l&fl\ p. SO. 
pumping-engine (purnp'ing-en'jin), n. Any 
form of motor for operating a pump. While 
puntplng-engines of many types are merely large steam- 
pumps, a distinction appears to obtain between the terms. 
Pumping-engines are among the largest engines con- 
structed. They are often built as beam-engines, as at the 
water-works of Louisville In Kentucky, and also as hori- 
zontal engines directly connected with horizontal pumps, 
as In the common steam-pump. 
pumping-shaft (pum ping-shaft), n. See shaft. 
pumpion (pum pion), n. [Also pompion, 
pompeon, jwimipion, pompon ; \ OF. pompon, a 
melon, a variant (simulating a reduplicated 
form) of earlier pepon (> ME. pepon), < L. 
pepo(n-), < Gr. jrttruv, a kind of melon : see 
pepo. Cf. pippin 1 . Hence pumpkin, q. v.] A 
pumpkin. [Obsolete or archaic.] 
Hcrbes of the bygger soric, as gourdes, melones, cu- 
cumers, pompont, citrons, and suche other, coome to their 
perfection In the space of thlrtle dayes. 
Peter Martyr (tr. In Eden's First Books on America, 
led. Arber, p. 168X 
All manner of strange fruits, as pomegranates, oranges, 
pompiont. Stow (Arber s Eng. Gamer, I. 477). 
We'll use this unwholesome humidity, this gross watery 
pumpion; we'll teach him to know turtles from jays. 
Shak., M. W. of W., III. S. 4S. 
Indian pampeont. the water melon, and the iniisk-mel- 
lon. & Cterihr, Hour Plantations In America (1670), p. 28. 
Observe a pompum-twlne afloat : 
Pluck me one cup from off the castle-moat! 
Along with rup you raise leaf, stalk, and root. 
The entire surface of the pool to boot 
Brooming, Sordello, II. 
pump-kettle (piiinp'krll), H. A convex per- 
foratcil diii)ihr:ii;iii livil ut the bottom of a 
