Related Clues:

• Small change
• Improve, in a way
• Sharpen, as a knife
• Refine
• Refinement
• Playful pinch
• Pinch
• Sharpen, as one's skills
• Get an edge
• Cutting edge creator
• Change a bit for the better
• Adjust
• Use a whetstone on
• Make small adjustments in
• Give an edge