Related Clues:

• Piques
• Sharpens
• Stimulates
• Excites
• Puts an edge on
• Works on the edge
• Arouses
• Hones
• Sharpens an ax, e.g.
• Sharpens, as a knife
• Appetizers, e.g.
• Makes keen
• Makes sharper
• Kindles
• Sharpens, as an appetite