/ Dictionary / Index M motherboard: Meaning and Definition of Find definitions for: moth•er•board Pronunciation: (mu'ur-bôrd", -bōrd"), [key] — n. Computers. a rigid, slotted board upon which other boards that contain the basic circuitry of a computer or of a computer component can be mounted. Cf.(def. 14). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mother Mother Carey's chicken Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language