/ Dictionary / Index M mizzenmast: Meaning and Definition of Find definitions for: miz•zen•mast Pronunciation: (miz'un-mast", -mäst"Naut.miz'un-must), [key] — n. Naut. the third mast from forward in a vessel having three or more masts. See illus. under the after and shorter mast of a yawl, ketch, or dandy; jiggermast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mizzenmast (Thesaurus) mizzen mizzle Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language