/ Dictionary / Index W Washoe: Meaning and Definition of Find definitions for: Wash•oe Pronunciation: (wosh'ō, wô'shō), [key] — n. b. 1965, female chimpanzee, first ape trained to communicate with humans by means of a sign language. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Washo washout Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language