/blak"bawrd', -bohrd'/ , n.
a sheet of smooth, hard material, esp. dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk. Also called chalkboard . Cf. greenboard .
[ 1815-25; BLACK + BOARD ]
/blak"bawrd', -bohrd'/ , n.
a sheet of smooth, hard material, esp. dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk. Also called chalkboard . Cf. greenboard .
[ 1815-25; BLACK + BOARD ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012