/ Dictionary / Index C crop duster: Meaning and Definition of Find definitions for: crop' dust"er Pronunciation: [key] a pilot employed in crop-dusting from an airplane. an airplane used in crop-dusting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crop-dust crop-dusting Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language