/ Dictionary / Index P plainsman: Meaning and Definition of Find definitions for: plains•man Pronunciation: (plānz'mun), [key] — pl. -men. an inhabitant of the plains. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plainsman (Thesaurus) Plains Indian Plains of Abraham Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language