Related Clues:

• Memento of a knife fight
• Do art on glass, say
• Emulate Albrecht Durer
• Harry Potter has a lightning-bolt-shaped one on his forehead
• Psychologically damage
• Decorate using acid, as glass
• Do art on glass
• Badge of battle
• Sign of a past injury
• Outline permanently
• Outline clearly
• Wound memento
• Engrave, as on glass
• Lesion
• Apply acid artistically