/ Dictionary / Index T tortoiseshell cat: Meaning and Definition of Find definitions for: tor'toise•shell cat'. Pronunciation: [key] See calico cat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tortoiseshell tortoiseshell turtle Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language