/ Dictionary / Index D double achievement: Meaning and Definition of Find definitions for: dou'ble achieve'ment Pronunciation: [key] — Heraldry. Heraldry. a representation of the arms of a husband beside those of his wife such that a difference of rank between them is shown. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. double double-acting Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language