trollopee 
Then' goes Mrs. Roundabout : I mean the fat laily in 
tin- lutestring trollopee. Goldsmith, On Dress. 
trolloping (trol'op-ing), a. [< trollop + -ing'*.] 
Slovenly; sluttish; trollopish. 
"Saw ever ony body the like o' that?" "Yes, you 
abominable woman," vociferated the traveller, "many 
have seen the like of it, and all will see the like of it that 
have anything to do with your tmuoping sex'." 
Scott, Antiquary, i. 
trollopish (trol'op-ish), a. [< trollop + -ish 1 ."] 
Like a trollop, especially in the sense of loosely 
or carelessly dressed, or accustomed to dress 
carelessly and without neatness; slovenly and 
loose in habit: noting a woman. 
trollopy (trol'op-i), o. [< trollop + -y 1 .] Same 
as trollopish. " Jane Austen, Mansfield Park, 
xxxviii. 
troll-plate (trol'plit), n. In mach., a rotating 
disk employed to effect the simultaneous con- 
vergence or divergence of a number of objects, 
such as screw-dies in a stock, or the jaws of a 
universal chuck. E. H. Knight. 
trolly, . See trolley. 
tromba(trom'ba),K. [It.: see trump*-.'] Same as 
trumpet. Tromba marina. Same as sea-trumpet, 1. 
trombidiid (trom-bid'i-id), . and . I. a. Per- 
taining to the Trombidiidee; related to or resem- 
bling a harvest-mite. 
II. n. A mite of the family Trombidiidte ; a 
harvest-mite. 
Trombidiidae (trom-bi-dl'i-de), . pi. [NL. 
(Leach, 1814, as Trombidides), < Trombidium + 
-ides.] A family of traeheate acarids, whose 
type genus is Trombidium; the ground-, gar- 
den-, harvest-, or soldier-mites, which have the 
palpi converted into raptorial organs. They are 
closely related to the Tetranyehidx, or spinning-mites, 
but are larger, velvety and opaque, and usually of brilliant 
colors, as scarlet or vermilion. They also differ in being 
predaceous and carnivorous, the spinning-mites being 
vegetable-feeders. Several genera and many species have 
been described, and the family is represented in all parts 
of the world. Trombidium. fasciculatum of the East In- 
dies, one third of an inch long, is the largest acarid known. 
The Trombidi-idx are strictly predatory in the adult stage, 
but their larva;, although originally no more parasitic than 
a gnat or a leech, will yet attach themselves to the bodies 
of animals, or even to man himself, and are usually sepa- 
rated only by death or artificial means, causing consider- 
able irritation while present. Some are known by the 
name of harvest-bug in England, and rouget in France, be- 
ing the Leptus autumnalis of earlier entomologists. 
Trombidium (trom-bid'i-um), n. [NL. (Fabri- 
cius, 1776, as Trombidiou).] A genus of mites, 
typical of the 
family Trombi- 
diidee. The body 
is divided into two 
parts. The small 
anterior and infe- 
rior part bears the 
eyes, mouth, and 
first two pairs of 
legs ; the other, 
muchlarger, swol- 
len and velvety, 
bears the last two 
pairs of legs. 
These mites are 
mainly parasitic, 
and many of them 
are bright-red. T. 
locustarum feeds 
upon the eggs of the Rocky Mountain locust or hateful 
grasshopper, Caloptenus (or Melanoplus) spretux. See also 
cut under harvest-tick. 
trombone (trom'bon), . [< F. trombone, < It. 
trombone, trombone, trumpet, sackbut, < tromba, 
a trump, trumpet: see trump 1 .] A large mu- 
sical instrument of the trumpet family. It has 
a long tube twice bent upon itself, and one of the loops is 
double, so that the outer tube, or slide, can be slipped over 
the inner like a sheath. When the slide is extended, the 
Locust Mite (Trombidium locust arum). 
i, mature mite, natural size in outline ; b 
larva, same relative enlargement. 
Trombone, with Slide. 
length of the tube is increased and its proper tone lowered. 
Since a full set of harmonics can be produced from any of 
many positions of the slide, the compass is long, and the 
intonation may be made very precise. The tone is pecu- 
liarly rich and solemn. Exceedingly fine harmonic effects 
may be produced by combining trombones of different sizes 
and fundamental pitches, which are called alto, tenor, and 
base trombones respectively. The trombone is thought to 
have been known in ancient times. It is now a regular 
constituent of the orchestra and of the military band. For 
the latter it is sometimes made with valves or keys instead 
of a slide, but its characteristic tone and its flexibility of 
intonation are thus lost. 
trombonist (trom'bo-nist), n. [< trombone + 
-int.'] A player on the trombone. 
trommel (trom'el), . [< G. trommel, a drum: 
see drum.'] In mining, a revolving cylindrical 
sieve for cleaning or sizing ore. Also called 
sizing-trommel and washing-drum or washing- 
6498 
trommel, according as it is used for sizing or for 
cleaning ores. See sizing 1 , 3. 
A trommel is a barrel in the form of a cylinder or of a 
truncated cone, horizontal or slightly inclined, turning 
round its own axis. It is the machine employed for simi- 
lar purposes in most other industries; the only wonder 
is that so long a time elapsed before it was adopted in 
dressing ores, for it furnishes the best possible means 
not only of cleaning the ore, but also of sizing it. 
Cation, Lectures on Mining (trans.). 
tromometer (tro-mom'e-ter), n. [< Gr. rpofiof, 
a trembling (< Tpe/ieiv = L. tremere, tremble : see 
tremble), + [itrpov, measure.] An instrument 
for measuring very slight earthquake-shocks, 
or vibrations of the earth's surface such as are 
sometimes called earth-tremors; a microseis- 
mograph. Numerous arrangements have been tried 
for this purpose, most of which combine the pendulum 
with some form of micrometric apparatus. 
tromometric (trom-o-met'rik), a. [< tromom- 
eter + -ic.] Of or pertaining to the tromom- 
eter. Nature, XLI1I. 520. 
trompt, trompeH. Obsolete forms of trump 1 . 
trompe 2 (tromp), n. [F. trompe, lit. a trump : 
see trump 1 .'] The apparatus by which the blast 
is produced in the Catalan forge. It is a sim- 
ple, effective, and ingenious contrivance for producing a 
continuous and equable blast, but its use is restricted to 
localities where a fall of water from a height of several 
yards can be obtained. The principle is that water can 
be made to fall through a pipe in such a way that it will 
draw in through side openings a considerable amount of 
air, which by a simple and ingenious arrangement can be 
utilized as a constant current or blast, and which has the 
merit of costing almost nothing. It has been utilized to 
a limited extent elsewhere than in the department of 
Ariege, in the south of France, where it was formerly very 
generally employed. Iron has been made in that district 
for more than 600 years, but the use of the trompe was 
not introduced until the end of the seventeenth century. 
Francois. 
trompille (trom-peT), n. [F.] One of the two 
long conical tubes through which the air en- 
ters the so-called "tree" (arbre) or air-pipe of 
the trompe, according to a method sometimes 
adopted. In general, however, the air finds admittance 
through two similar rectangular holes at the top of the 
tree, opposite each other, and inclining downward at an 
angle of about 40. 
trompOUTt, trompert, n. Obsolete forms of 
trnmper. 
tron (tron), n. [A var. of trone 1 .] 1. A wooden 
pillar or post set up in a market-place and sup- 
porting a horizontal beam on which were hung 
the town scales for weighing wool and other 
articles: hence the phrases tron weight, tron 
stone, tronpound,etc. Also trone. 2. A wooden 
air-shaft in a mine Tron weight, a standard of 
weight formerly in use in Scotland, for weighing wool, 
cheese, butter, and other home productions. The tron 
pound ranged, in different counties, from 21 to 28 ounces 
avoirdupois. The later tron stone contained 16 tron 
pounds of 1.3747 pounds avoirdupois each. 
trona (tro'na), n. [Prob. a North African 
form ult. connected with natron.] The native 
soda of Egypt, a hydrous carbonate of sodium, 
Na 2 CO 3 .HNaCO 3 + 2HoO. It also occurs at Borax 
Lake San Bernardino county, California, in Churchill 
county, Nevada, and elsewhere. Urao, from a lake in 
Venezuela, is the same compound. 
tronage (tron'aj), n. [< tron + -age.'] 1. A 
royal tax upon wool. See tronator. 2. See 
the quotation. 
Next unto this stockes is the parish church of S. Mary 
Woll-Church, so called of a beame placed in the church- 
yard which was thereof called Wooll church-haw, of the 
tronage, or weighing of wooll there used. 
Stowe, Survey of London (ed. 1633), p. 244. 
tronator (tron'a-tpr), n. [ML., < trona, a tron : 
see tron, trone 1 !] An official whose duty it was 
to weigh wool and receive the custom or toll 
termed tronage. Arclixol. Inst.Jour., XVII. 165. 
tronchon't, tronchount, n. Obsolete forms of 
truncheon. 
tronchon 2 !, . See trunchon^. 
trongonnee (F. pron. tron-so-na'), [F. tron- 
connc, < tronqon. a stump: see truncheon.] In 
her., same as shivered: noting a tilting-lance. 
trone 1 (tron or tron), n. [< OF. trone (ML. trona), 
a weighing-machine, < Icel. trana, trani, m., = 
Dan. trane, a crane: see crane 2 .] 1. Same as 
tron, 1. 
And frae his body taken the head, 
And quarter'd him upon a trone. 
The Gallant Grahams (Child's Ballads, VII. 143). 
2f. A market or market-place Trone weight. 
Same as tron weight (which see, under tron). 
trone 2 (tron), n. A small drain. [Prov. Eng.] 
trone 3 t, and v. A Middle English form of 
throne. 
troolie-palm (tro'li-piim), . A name of the 
bussu-palm. 
troop (trop), n. [Formerly also troope, troupe 
(still used in some senses); < F. troupe, OF. 
trope, trupe = Pr. trap = Sp. Pg. tropa = It. 
troopial 
trppa(M.Ij. troppiiK, trupim), a company, troop; 
origin unknown. According to Diez, a change, 
in the mouth of Germans, from L. turba into 
'tritpa, whence, by change of gender, tropus, 
troppus. Cf. tropct.] 1. An assemblage of peo- 
ple ; a multitude ; a company ; a band. 
We come by troops to the place of assembly, that, being 
banded as it were together, we may be supplicants enough 
to besiege God with our prayers. 
Tertullian, quoted in Hooker's Eccles. Polity, v. 24. 
Honour, love, obedience, troops of friends, I must not 
look to have. Shak., Macbeth, v. 3. 25. 
There was a troup o' gentlemen 
Came riding merrilie by. 
The Broom of Cou-denknows (Child's Ballads, IV. 45). 
2. A body of soldiers : generally used in the 
plural, signifying soldiers in general, whether 
more or less numerous, and whether belonging 
to the infantry, cavalry, or artillery. 
Farewell the plumed troop, and the big wars, 
That make ambition virtue ! 
Shale., Othello, iii. 3. 349. 
Colonel Prendergast, the commandant of the station, 
had but 800 troops, of whom 200 only were Europeans, to 
meet a force of overwhelming superiority in numbers. 
Cornhill Mag., Oct., 1888, p. 380. 
3. In cavalry, the unit of formation, consisting 
usually of sixty troopers, commanded by a cap- 
tain, and corresponding to a company of in- 
fantry. 
When a troop dismounts and acts on foot, it is still 
called by that name. Stocqueler. 
Hence 4. The command by commission and 
rank of such a troop of horse. 
His papa would have purchased him a troop nay, a 
lieutenant-colonelcy some day, but for his fatal excesses. 
Thackeray, Fitz-Boodle's Confessions. 
5. A band or company of performers ; a troupe. 
6. A particular roll or call of the drum ; a 
signal for marching. 
Tony's beat of the troop was the signal for the soldiers to 
assemble. S. Judd, Margaret, i. 13. 
7. A herd or flock of beasts or birds: as, a 
troop of antelopes or sparrows. Household 
troops. See household. Subsidiary troops. See sub- 
sidiary. 
troop (trop), v. [< troop, n.] I. intrans. 1. To 
assemble or gather in crowds ; flock together. 
What would ye, soldiers ? wherefore troop ye 
Like mutinous madmen thus? 
Fletcher, Loyal Subject, iv. 7. 
Now from the roost . . . 
Come trooping at the housewife's well-known call 
The feather'd tribes domestic. Cowper, Task, v. 01. 
The Maids of Nazareth, as they trooped to fill 
Their balanced urns beside the mountain rill. 
0. W. Holmes, The Mother's Secret. 
2. To march; to march in or form part of a 
troop or company. 
Nor do I as an enemy to peace 
Troop in the throngs of military men. 
Shak., 2 Hen. IV., iv. 1.62. 
3. To march off in haste. 
Aurora's harbinger, 
At whose approach, ghosts, wandering here and there, 
Troop home to churchyards. Shak., M. N. D., iii. 2. 382. 
But, whatever she had to say for herself, she was at last 
forced to troop off. Addison, Spectator, No. 464. 
He was generally seen trooping like a colt at his mother's 
heels. Irving, Sketch-Book, p. 48. 
4f. To associate or consort. 
A snowy dove trooping with crows. 
Shak., R. and. I., i. 5. 50. 
II. trans. 1. To associate as in a troop or 
company. 
To troope my selfe with such a crew of men 
As shall so fill the downes of Affrica. 
Greene, Orlando Furioso, 1. 213. 
2. To form into troops, as a regiment. Troop- 
ing the colors, in the British army, an elalwrate cere- 
mony performed atthepublic mounting of garrison guards. 
troop-bird (trop'berd), n. A troopial. 
trooper (tro'per), . [= F. trovpier; as troop 
+ -er 1 .] 1. A private soldier in a body of cav- 
alry ; a horse-soldier. 
The troopers, according to custom, fired without having 
dismounted. Scott, Old Mortality, xvi. 
2. Acavalry horse ; a troop-horse. 3. A troop- 
ship Native trooper, in Australia, a member of a 
body of mounted police recruited from the aborigines and 
officered by white men. Trooper's damn. See damn. 
troop-fowl (trop'foul), n. The American scaup : 
same as flocking-fowl. F.C.Broime. [Massa- 
chusetts.] 
troop-horse (trop'hors), . A cavalry horse. 
How superlatively happy, however, must he have been 
in the possession of one of these wonderful horses! 
warranted chargers troop-horses, every one! 
J. Ashton, Social Life in Reign of Queen Anne, 1. 11. 
troopial (tro'pi-al), n. [Also troup'ml : < F. 
troupiale, < troupe, troop: see troop.] A book- 
