/ Dictionary / Index M merman: Meaning and Definition of Find definitions for: mer•man Pronunciation: (mûr'man"), [key] — pl. -men. (in folklore) a male marine creature, having the head, torso, and arms of a man and the tail of a fish. a highly skilled male swimmer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: merman (Thesaurus) mermaid weed Merneptah Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language