Related Clues:

• Improved
• Work on the edge?
• Make perfect
• Gave an edge
• Make sharper
• Refined, as skills
• Gave an edge to
• Give the edge to?
• Apply to a whetstone
• Make more acute
• Get sharp
• It might help you make the cut
• Improve, as an edge
• Sharpen, as skills
• Improve in small increments