blackboard
🇺🇸
/ˈblækbɔːrd/
🇬🇧
/ˈblækbɔːd/
A dark board that teachers write on with chalk.
The teacher wrote the math problem on the blackboard for the class to solve.
선생님이 반 학생들이 풀 수 있도록 수학 문제를 칠판에 썼습니다。