/ Dictionary / Index D double tackle: Meaning and Definition of Find definitions for: dou'ble tack'le Pronunciation: [key] a pulley system using blocks having two grooved wheels. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. doublet double-tailed Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language