Breadcrumb Home > Dictionary > Index M mountaineering: Meaning and Definition of Find definitions for: moun•tain•eer•ing Pronunciation: (moun"tn-ēr'ing), [key] — n. the sport of climbing mountains. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mountaineering (Thesaurus) mountaineer mountain fetterbush ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language