Related Clues:

• Do a classroom chore
• Use the backspace key
• Clean boards
• Remove, as one's hat
• Shake an Etch-a-Sketch
• Lessen, with 'down'
• Answering machine button
• Tip the cap
• Trash
• Remove from the blackboard
• Edit out
• Cancel out
• Whittle (down)
• Delete relative
• Tip, as a topper