/ Dictionary / Index T tansy: Meaning and Definition of Find definitions for: tan•sy Pronunciation: (tan'zē), [key] — pl. -sies. any of several composite plants of the genus Tanacetum, esp. a strong-scented, weedy, Old World herb, T. vulgare, having flat-topped clusters of tubular yellow flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tansy (Thesaurus) tanrec tansy ragwort Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language