Related Clues:

• Wear away, in a way
• Eat away (at)
• What rodents do
• Cause corrosion
• Bother horribly
• Work on, as a bone
• Agitate, with "at"
• Imitate a beaver
• Chew away at
• Act the rodent
• Annoy no end
• Eat like a rat
• Emulate a mouse
• Beleaguer, with 'at'
• Nibble on, as a bone