Related Clues:

• Cut into metal
• Sear into one's memory
• Work on, as a bone
• Sharply outline
• Steadily reduce, in a way
• Agitate, with "at"
• Inscribe on a trophy, e.g.
• Make an impression on
• Imitate a beaver
• Make a deep impression on
• Chew away at
• Disappear slowly, in a way
• Act the rodent
• Permanently mark, in a way
• Deteriorate, in a way