/ Dictionary / Index D double coat: Meaning and Definition of Find definitions for: dou'ble coat' Pronunciation: [key] an outer coat of hair on a dog serving as protection against underbrush and resistant to weather, combined with an undercoat of softer hair for warmth and waterproofing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. double-clutch double coconut Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language