blackboard: Meaning and Definition of

black•board

Pronunciation: (blak'bôrd", -bōrd"), [key]
— n.
  1. a sheet of smooth, hard material, esp. dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk. Also calledCf. greenboard.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
black blizzard blackboard jungle
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