/ Dictionary / Index A adder's-mouth: Meaning and Definition of Find definitions for: ad•der's-mouth Pronunciation: (ad'urz-mouth"), [key] — pl. -mouths any of several North American, terrestrial orchids of the genus Malaxis, having tiny white or greenish flowers. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. adder adder's-tongue Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language