/ Dictionary / Index T thoroughbred: Meaning and Definition of Find definitions for: thor•ough•bred Pronunciation: (thûr'ō-bred", -u-bred", thur'-), [key] — adj. of pure or unmixed breed, stock, or race, as a horse or other animal; bred from the purest and best blood. (sometimes cap.) of or pertaining to the Thoroughbred breed of horses. (of a person) having good breeding or education. —n. (cap.) one of a breed of horses, to which all racehorses belong, originally developed in England by crossing Arabian stallions with European mares. a thoroughbred animal. a well-bred or well-educated person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thoroughbred (Thesaurus) thorough brace thoroughfare Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language