/ Dictionary / Index J jiggermast: Meaning and Definition of Find definitions for: jig•ger•mast Pronunciation: ( jig'ur-mast", -mäst"Naut.jig'ur-must), [key] — n. Naut. a small mast set well aft in a boat or ship; mizzenmast. the fourth mast from forward in a ship having five or more masts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jiggermast (Thesaurus) jiggered jiggers Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language