blackboard/'blækbɔːd $ -bɔːrd/

n. a board with a dark surface on which a teacher writes with chalk

n. [C] 黑板：The boy rubbed the blackboard clean for the teacher. 这个男孩为老师擦黑板。

◇write words on the blackboard 在黑板上写单词

构词black + board

同根 aboard; blackboard; cupboard; keyboard; skateboard