Sentence examples for blackboard duster from inspiring English sources

This is also known as a blackboard duster.

Notice the chalk and the chalk duster in front of the blackboard.

Blackboard material.

That's computer duster.

A decorative knuckle duster.

"Donald, go the blackboard".

(See also crop duster).

An air duster may help.

The blackboard was filling with chalk.

Tracy Armstrong and Chris Hsu joined the Blackboard Co., Austin, Tex.

Strictly speaking, it's a feather duster.