n.
Pronunciation: ' blak- ˌ bo ̇ rd
Function: noun
Date: 1823
: a hard smooth usually dark surface used especially in a classroom for writing or drawing on with chalk
n.
Pronunciation: ' blak- ˌ bo ̇ rd
Function: noun
Date: 1823
: a hard smooth usually dark surface used especially in a classroom for writing or drawing on with chalk
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012