/ Dictionary / Index M mains: Meaning and Definition of Find definitions for: mains Pronunciation: (mānz), [key] — n. (used with a sing. v.) Brit. Dial. the main or home farm of a manor, as where the ownerlives; manse. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mains (Thesaurus) mainour mainsail Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language