Trachynotus 
free spines on the back (whence the name); the 
pompanos. There arc several species, highly 
i allied as I'ood-lisheH. See /iiilili>itn<i, 1. 
trachyphonia (trak-i-fo'ni-jj), . [ML., < (ir. 
Tpaxvfuvta, roughness of voice, < r/ yi'^tivof, 
rough-voiced. < TII\U, rough, 4- ifxjvfj, voice.] 
Roughness of the voice. 
Trachypteridae (trak-ip-ter'i do, . /,i. | XI.., 
< Tracnyptrrns + -iil,T.] A family of deep-sea 
acanthopterygian lishes. typified liy the ge- 
nus 'rritelii//iii-i it.--, of few species, some of which 
lire note. I for their fragility. T. arcticiu Is the deal 
tlsh (see cut under (li'al-fixh), occasionally stranded on 
Mir British r<>;i>ls. Tin- l:mnlv has been used with vary- 
hiK limits. In liiinther'H classification It included the 
l;>-:liil'',-iil.T or uar-tishestsec cut ilmlrr RsMlMttf^ and the 
xiiilnphitridar. In i;ill s ft is restricted to treniosonies 
with the IHN!) moderately Imijtand inili'h compressed; the 
licucl and opcrcniar a|i|initiis short (the operculum ex- 
tended dowmmd, Hie in&oparoillllin l-li.\v it, the inter- 
opereuliiin contracted backward mid bounded behind by 
the opcicnlnni ami siilmnerculum); the ventral tins with 
few rays In the young and atrophied or lost In the adult; 
the eran film with a my Mlmnc ami hasisphenold; thesupra- 
oceipiUd prominent behind ; tin- cpiotics confined to the 
sides and back of the uranium ; and no rlb. 
trachypteroid (tra-kip'te-roid), a. and n. [< 
Trae&yptenu + -old.] I. a. Belonging to the 
Trachyptcridse, or having their characters; re- 
sembling or related to the king of the salmon. 
II. it. A fish of the family Trachypteridfe. 
Trachypterus (tra-kip'te-rus), . [NL. (Qouan, 
1770), < Gr. rpaxffi rough, + irrepov, wing (fin).] 
The leading genus of trachypteroid fishes, char- 
acterized by the well-developed ventral fins of 
from four to six branched rays, and the long 
fan-shaped caudal fin. (See cut under detu- 
Jixli. ) T. n/liri li.-- is known as Icing of the salmon 
(which see, under kina 1 ). 
trachyspermous (trak-i-sper'mus), a. [< Gr. 
rpaxi'f, rough, + airtp/ia, seed.] In not., hav- 
ing rough seeds; rough-seeded. 
Trachystomata (trak-i-sto'ma-tii), n.pl. [NL., 
< Gr. rpaxi't, rough, + oro/ia, mouth. ] A group 
of urodele amphibians, of eel-like form and with- 
out hind legs, as the Sirenidse. The basloccipltal, 
supra-occipital, and supratemporal bones are suppressed ; 
there is no vomer, intercalare, or maxillary arch ; and the 
propodials are distinct. See Sirenidse, 1. 
trachyte (trak'it), n. [= F. trachyte = G. tra- 
chyt, < Gr. r/aajiaT/c, roughness, < rpaxi'S, rough, 
rugged.] A volcanic rock exhibiting a char- 
acteristic roughness when handled. At present 
it is sought to limit the terra to rocks composed essen* 
lially of sanldine, with more or less trlclinic feldspar; 
hornblende, biotite, and magnetite are also frequently 
present in greater or less quantity. Much of the rock of 
the Cordilleras, formerly called trachyte, is now consid- 
ered by Hthologists to belong more properly among the 
andesites. Greenstone-trachyte. Hzmenavropylite. 
Quartz-trachyte, a rock distinguished from Irachyte by 
the presence of quartz. As used by most lithologists, the 
same as liparite or qtiartz-rhyolite. 
trachyte-tuff (trak'it-tuf), . A fragmentary 
eruptive rock made up of trachytic material. 
See tuff 3 and trachyte. 
Like the other fragmentary volcanic rocks, the tuffs may 
be subdivided according to the lava from the disintegra- 
tion of which they have been formed. Thus we have fel- 
site-tuffs, trachyte-tuff, basalt-tuffs, pumice-tuffs, porphy- 
rlte-tuffs, etc. Oelkic, Text Book of Oeol.. 2d ed., p. IBS. 
trachytic (tra-kit'ik), a. [< trachyte + -ic.] 
Pertaining to or consisting of trachyte, 
trachytpid (trak'i-toid), a. [< trachyte + -oid.] 
Belonging to or having the characters of trach- 
yte Trachytoid structure (as used by Fouqud and 
Michel-Levy, In describing the eruptive rocks), a type of 
structure in which an amorphous magma is present, with 
the usual evidences of tluxion, while at the same time 
there is a more distinct indication of two epochs or stages 
of crystallization than there is in the granitoid structure 
as this latter term is limited by these authors. 
tracing (trii'sing), n. [Verbal n. of trace 1 , r.] 
1. The act of one who traces. 2. A track or 
path ; a course. 
Not all those precious gems in Heav'n above 
Shall yield a sight more pleasing to behold, 
With all their turns and tracing* manifold. 
Sir J. Danes, Dancing, St. 13. 
3. A mechanical copy of a design or drawing, 
made by reproducing its lines as seen through 
a transparent medium, as tracing-paper. 
tracing-cloth (tra'sing-kldth), . A smooth 
thin linen fabric, coated with size, used for 
making tracings of drawings, plans, etc., as less 
destructible than tracing-paper. Also called 
tracing-linen. 
tracing-instrument (tra'sing-in'strtj-tnent), ii. 
An instrument of any kind used to facilitate 
tracing, or to make by tracing an enlarged or. a 
reduced copy. See tracer (</), and cut under 
l>itnli></riii>/i. 
tracing-linen (tra'sing-liu'en), M. Same as 
tracing-cloth. 
64l:t 
tracing-lines (tni'sing-liti/.). //./)/. .v/.. lines 
in a --hip passing through :i lilock or thimble, 
and useil to hoist a thing higher. 
tracing-machine (tra'sing-ma-shen"), . Same 
as trurrr (;/). 
tracing-paper (tra'sing-]>a'per), . 1. tieepa- 
I" r. 2. Same as tramyer-uaper, 1. 
tracing-thread (tni'sing-thred), . In laee- 
iiiiil.-iiHj: (a) A bordering thread thicker than 
most of the threads of the fabric, usually indi- 
eating the pattern. (6) A group or cluster of 
threads used for such bordering. Compare trol- 
li'il-llii-i-iiii (under trolley), and Meehlin Im-e (un- 
der lace). 
tracing-wheel (tra'sing-hwel). it. A wheel used 
as a tracer; especially, a small toothed wheel 
attached to a handle by which it is run over a 
sni -t'ai -e to mark a pattern in dotted lines. 
track 1 (trak), r. t. [A var., prob. due to asso- 
ciation with the noun tract', of treck (aa in 
treck-j>ot), or trick (see trick 3 , draw), < MD. 
trecken, 1). trekken, draw, pull, tow, delineate, 
sketch, also intr., travel, march, = OFries. trek- 
ka, tregija = MLG. trecken, LG. trrkken = MHG. 
G. trecken, draw, a secondary form of a strong 
verb seen in OHG. trehhan, MHG. trechen, 
draw, shove, scrape, rake. The L. trahere, 
draw (whence ult. E. tracft, trace 1 ), is a differ- 
ent word. Cf. track'i, n. and r.] 1. To draw; 
specifically, to draw or tow (a boat) by -A line 
reaching from the vessel to the bank or shore. 
2f. To draw out; protract; delay. 
Yet by delates the mailer was alwaies tracked, and put 
over without any frntefiil determination. 
Strype, Ke'eles. Mem., Hen. VIII., Originals }io. 13. 
track 1 (trak), n. [< MD. treck, treke, D. trek, a 
drawing, train, delineation, feature: from the 
verb: see track 1 , v. Cf. track^, n., and tract 1 , n.. 
6, with which track 1 is confused, and to which 
it may be in part or wholly due (so track 3 for 
tracft). Cf. trick%, n.] A feature; lineament. 
[Scotch.] 
track 2 (trak), . [Formerly also tract (by con- 
fusion with tracft); < OF. trac, a track, trace, a 
beateu way or path, a course, F. trac, track, < 
MD. treck, treke, a drawing, draft, delineation, 
feature, train, procession, a line or nourish 
with a pen, a sketch, D. trek, a draft, feature, 
expedition, = MLG. trek, draft, expedition : see 
track 1 , . (the same word derived directly from 
the D.), and track 1 , v. See also trek. For the 
relation of track? to track 1 , draw, cf. that of 
trace 1 , 'track,' to trace 1 , 'draw.'] 1. A mark 
left by something that has passed along: as, 
the track of a ship (a wake); the track of a 
wagon (a rut). 
The weary sun, . . . 
... by the bright track of his fiery car, 
(lives signal of a goodly day to-morrow. 
*., Rich. III., r. 3. 20. 
Thou do'st cleaue, with thy keen Fanchins force, 
The Bards and Breast-plate of a furious Horse, 
No sooner hurt, but he recoyleth back, 
Writing his Fortune in a bloody track. 
Syloeiter, tr. of Du Bartas's Weeks, ii., The Vocation. 
2. A mark or an impression left by the foot, 
whether of man or beast; a footprint; specif- 
ically, in paleon., an ichnite or ichnolite; a 
fossil footprint, or cast of an extinct animal's 
foot. Compare trace 1 , 1, and trail 1 , 2. 
Consider the atmosphere, and the exteriour frame and 
face of the globe. If we may find any track* and footsteps 
of wisdom in the constitution of them. 
Bentley, Works, I. vlii. i 8. 
3. A road ; a path ; a trail. 
Behold Torquatus the same track pursue. 
Dryden, .Endd, vi. 11.10. 
Up through that wood behind the church 
There leads from Edward's door 
A mossy track, all over-bonghcd 
For half a mile or more. Coleridge, Three Qraves. 
We all shrink, like cowards, from new duties, new re- 
sponsibilities. We do not venture to go oat of the beaten 
track of our dally life. J. F. Clarke, Self-Culture, p. S40. 
4. A course followed ; a way of going or pro- 
ceeding: as, the track of a comet. 
Thy Fancy like a Flame its way does make, 
And leaves bright Tracks for following Pens to take. 
Cm-ley. To Sir W. Davenant. 
If straight thy track, or if oblique, 
Thou know'st not. Tennymm, Two Voices. 
5. The course or path laid out for horse-, foot-, 
bicycle-, or other races: as, a cinder track; a 
track of six laps to the mile. 6. The two con- 
tinuous lines of rails on which railway-cars 
run, forming, together with the ties, ballast, 
switches, etc.. an essential part of the perma- 
nent way: as, a single track; a double truck; to 
cross the track. See cut under gtcitck. 7. In 
tracker 
mult., the course of a vessel, nerve, duel, etc. 
8. In ;IM>I.. the sole c,t the foot. Double-track 
road, a railroad having two tracks, M> that trains may run 
In both directions at the same time. In one's tracks, 
where one stands; aa one goes; hence, tin u ;tn<l t 
on the spot. 
He was In fur stealing honei, but 1 think the real thief 
swore It off on him If In- did, <iud forgive him ; lie hail 
better have shot the Uiy in hu tracks. 
The Century, XL. 244. 
Off the track, thrown from the track ; derailed, as a rail- 
way-carriage ; colloquially, having wandered away from 
the subject under discussion : as, the speaker was a IOIIK 
way oftlu front.- Side track. See tide-track. Single- 
track road, a railroad having only one tiack. hut pro- 
vided with turnouts at intervals, so that trains may run 
both way*. -To have the Inside track. Heewmfc. - 
To make tracks, to go away; quit; leare; depart. 
(Slang. ] 
You will be pleased to make track*, and vanish out of 
these part* forever ! Kittgtlfy, Two Yean Ago, xlv. 
To make tracks for, to go for ; go after. (Slang. ] 
"Imo<fefnufo/<n-th*tlad,"saldIU>bert, . . . "I found 
him in the fields one morning." 
Mr*. Humphry Ward, Robert Elsmere, xlii. 
Track-laying machine, a machine for laying rails In 
position on a railroad-track, the machine moving forward 
over each part of the track so laid. =Byn. 3-6. lload, 
Path, etc. (see van), trail, pathway. 
track 2 (trak), t'. t. [< track?, n. Cf. OF. trac- 
(/<"'. surround in hunting, hunt down. In def. 
3, cf. track 1 , r., draw, from which, or its source, 
track'*, n. and r., is derived.] 1. To follow up 
the tracks of; follow by the tracks or traces 
left by that which is followed ; trace ; trail. 
It was often found Impossible to track the robben to 
their retreat*. Macaulay, Hist. Eng., III. 
Through camp and town and wilderness 
He tracked hli victim. Whittier, Mogg Megone, II. 
I will track this vermin to their earths. 
TcnnyKtn, Geralnt. 
2. To ascertain by means of existing traces or 
remains; trace. 
The whole line of their retreat might be tracked by the 
corpses of thousands who had died of cold, fatigue, and 
hunger. Macaulay, Frederic the lireat. 
3. To trace, follow, or mark out plainly. 
The straight course to her desire was tracked. 
Draytan, Barons' War*, i. 32. 
A thirst to spend our fire and restless force 
In tracking out our true, original course. 
M. Arnold, The Buried Life. 
4. To make tracks over; traverse: as, to track 
the desert. 6. To make marks upon, as with 
wet or muddy feet. 
44 Stand still there ! " she called to me as I approached 
the door, "ami don't come In to track my floor. ' 
B. B. Stowe, Oldtown, p. 21. 
track-'t (trak), . [An erroneous form of tract 1 , 
as tract* is an erroneous form of track?.] A 
tract of land. 
Those small trackt of ground, the county of Poole, and 
the like. Fatter, Ueneral Worthies. (Kchardtan.) 
trackage 1 (trak'aj), n. [< track 1 + -age.] A 
drawing or towing, as of a boat on a river or 
canal ; haulage ; towage. 
trackage 2 (trak'aj), H. [< track* + -aye.] The 
collective tracks of a railway. 
The total trackage Is twelve miles, the equipment is 
forty cars. Science, XII. 4. 
track-boat (trak'bot), M. f< track 1 + boat.] A 
boat which is towed by a line from the shore ; a 
canal-boat. 
I remember our glad embarkation towards Paisley by 
canal trackboat. Carlyle, Reminiscences, p. 104. 
track-chart (trak'chart), M. A chart showing 
the path of a vessel at sea. 
track-clearer (trak'kler'er), n. 1. A bar or 
guard suspended above the track just in front 
of the wheels of a locomotive or a horse-car, 
forthe purpose of pushing any obstruction from 
the track; also, a cow-cateher. or a track- 
sweeper for removing snow from a railway. 
2. A triangular board at the outer end of the 
cutter-bar of a mowing-machine or harvester, 
serving at once to guide the grain to the cutter 
and to clear a path for the next course of the 
machine. 
track-edge (trak'ej), . In milliiKj, the abrupt 
edge of the furrow of a millstone. 
trackerl (trak'er), H. [< track 1 + -er 1 .] 1. 
One who tracks or tows a boat or raft, as on a 
river or canal. 
A hundred naked, shouting, and arm-swinging trackm 
dragged each one [a junk] slowly along, now straining 
every muscle at the long tow-line, now slacking up. as a 
man seated at the bow of the boat directed them with the 
beat of a small drum held between his knees. 
The Century, XU. 729. 
2. In iiri/ini-liuililiii!/, a thiii strip or ribbon of 
wood used to transmit a pulling motion from 
