/ Dictionary / Index D dust gun: Meaning and Definition of Find definitions for: dust' gun" Pronunciation: [key] a hand-operated device for spraying pesticide or dusting plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. duster dust head Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language