/ Dictionary / Index T Thai: Meaning and Definition of Find definitions for: Thai Pronunciation: (tī), [key] — n. Also calleda native or descendant of a native of Thailand. the language of Thailand, a member of the Tai group of languages. —adj. of or pertaining to Thailand, its people, or their language; Siamese. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thai (Thesaurus) thae Thailand Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language