| triblet | n. | conical tapering shaft used for adjusting size of metal objects such as rings | ||
| trichiliocosm | n. | third order world of thousands of thousands of worlds, conception of universe of universes, higher power universe of billions of universes | ||
| trichotillomania | n. | mental disorder in which the sufferer undergoes strong urges to pull out his or her hair | ||
| trichotomy | n. | division into three | ||
| triolet | n. | eight-line poem having rhyme scheme abaaabab with 1st line repeated as the 4th and 7th lines, and the 2nd as the 8th | ||
| triphibious | adj. | able to move on land or water and in air | ||
| tripos | n. | examination for bachelor’s degree at Cambridge; courses taken in preparation for such exams | ||
| tripper | n. | excursionist, one who goes on a trip | British | |
| triptyque | n. | temporary customs permit for a motor vehicle which serves as a vehicular passport | ||
| tripudiate | v. | to dance in joy, triumph, or contempt | ||
| trituration | n. | the reduction of a substance to a fine powder | ||
| trocar | n. | perforator enclosed in a cannula or metal tube used in surgery for draining fluids, etc. | ||
| tropology | n. | the use of tropes or figures of speech | ||
| tropopause | n. | atmospheric boundary layer between troposphere and stratosphere | ||
| trotter | n. | animal that trots; foot of an animal (esp. sheep or pig) used as food | ||
| trow | v. | to believe, to trust | ||
| troy weight | n. | system of measurement with a pound of 12 ounces, an ounce of 20 pennyweights, with a pennyweight of 24 grains | ||
| trucidate | v. | to massacre, to murder, to kill, to slaughter | ||
| truckle | v. | to submit timidly; to submit from unworthy motives | ||
| truckle bed | n. | low bed on casters for rolling it beneath a fixed bed when not in use | ||
| truculent | adj. | fierce, cruel, barbarous | ||
| trudge | v. | to walk laboriously or wearily | ||
| truncheon | n. | broken off piece; fragment of spear or lance | ||
| trunnion | n. | one of pair of pivots supporting something; cylindrical projection from cannon supporting same on its carriage | ||
| tucker | n. | linen, lace, or similar piece worn around top of bodice | ||
| tufa | n. | limestone formed from calcareous deposits from springs or lakes | ||
| tulwar | n. | Indian saber | ||
| tumbaga | n. | gold and copper alloy used in pre-Columbian Mesoamerica | ||
| tumbrel | n. | two-wheeled wooden cart, esp. that used to convey persons to the guillotine during the French Revolution | ||
| tumid | adj. | swollen; bombastic | ||
| tummler | n. | gregarious activity director and emcee at Catskill Mountain resorts | ||
| turbary | n. | land where peat or turf may be cut for fuel; legal right to cut turf or peat on such land | ||
| turbid | adj. | opaque with suspended matter, muddy, cloudy | ||
| turf | v. | to forcibly remove, to kick out (also turf out) | British | |
| turgid | adj. | pompous, overblown | ||
| turgor | n. | swollenness; distention of plant cells | ||
| turpitude | n. | vileness, inherent wickedness | ||
| turps | n. | alcoholic drink; turpentine | slang | |
| tussar | n. | deep gold silk | ||
| tussock | n. | tuft, clump, or bunch of grass or sedge | ||
| tutelary | adj. | of or related to a guardian or guardianship | ||
| tweeny | n. | auxiliary maidservant, assisting both the cook and housemaid | ||
| twit | v. | to censure, to tease | ||
| twoc | v. | to steal, esp. a car (from the phrase ‘taking without owner’s consent’) | British | |
| tylectomy | n. | removal of tumor or cyst by surgery, esp. from the breast; lumpectomy | ||
| Tyler | n. | guard stationed outside meeting of Masons to prevent uninitiated persons from entering | ||
| tympanic | adj. | related to the eardrum; of or resembling a drum | ||
| tympany | n. | swelling of the bowels caused by a build up of gas in the intestines | ||
| tyne | v. | (also tine) to close or shut | ||
| typewriter | n. | submachine gun (esp. a Thompson submachine gun) | slang |
