/ Dictionary / Index M maintop: Meaning and Definition of Find definitions for: main•top Pronunciation: (mān'top"), [key] — n. Naut. a platform at the head of the lower mainmast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Maintenon main-topgallant Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language