/ Dictionary / Index T Three Sisters*: Meaning and Definition of Find definitions for: Three' Sis'ters Pronunciation: [key] a play (1901) by Anton Chekhov. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Three Signs of Being threesome Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language