noun
blackboard eraser; chalkboard eraser
A cloth or felt eraser used to wipe chalk from a blackboard. Common in school settings.
授業の後、黒板拭きで黒板をきれいにした。
After class, I cleaned the blackboard with the blackboard eraser.
Synonym for blackboard eraser; 黒板拭き emphasizes the wiping action, while 黒板消し emphasizes erasing.
Compound of 黒板 (blackboard) and 拭き (wiping, from 拭く 'to wipe').