chalkboard
n. countable B1 Intermediate UK //tʃˈɔːkbɔːd// chalk·board
n. a large, dark board used for writing with chalk. You often see them in classrooms for teachers to write lessons on.
n. a large, dark surface, typically made of slate or a synthetic material, used for writing with chalk. Often used in educational settings for instruction or public announcements.
The teacher wrote the math problem on the chalkboard.
Students used the chalkboard to leave messages for their classmates before the school year ended.
While digital projectors have become standard in modern lecture halls, many educators still prefer the tactile feedback of writing directly on a chalkboard for complex mathematical derivations.
From chalk + board.