/ Dictionary / Index I informing gun: Meaning and Definition of Find definitions for: inform'ing gun" Pronunciation: [key] a gun fired by a warship to signal its intention to search a merchant vessel. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. informercial infortunate Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language