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Blackboard eraser
01
a rectangular tool made of felt or foam used to remove chalk markings from a blackboard
blackboard eraser
n
Example
The teacher used the blackboard eraser to clean the chalkboard after the lesson.
He tapped the blackboard eraser against the chalk tray to remove excess dust.
She wiped the equations off the blackboard with a swift motion of the blackboard eraser.
The students took turns using the blackboard eraser to clear the board before the next class.
The old blackboard eraser left streaks on the board, so they replaced it with a new one.
