Related Clues:

• Disappear gradually
• Carve in stone
• Make a permanent impression
• Make some designs
• Design with acid
• Bite away at
• Chew on
• Write on glass
• Incise with acid
• Be beaverish
• Trouble persistently
• Subject to ablation
• Imprint
• Make a deep impression
• Lose underpinnings, e.g.