/ Dictionary / Index D dry run: Meaning and Definition of Find definitions for: dry' run' Pronunciation: [key] a rehearsal or practice exercise. practice in firing arms without using live ammunition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dry rot fungus dry-salt Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language