Related Clues:

• Use a strop
• Make a finer point
• Make a point
• It'll give you an edge
• It'll give you the edge
• Improve, as one's skills
• Perfect, as one's skills
• Sharpen, as on a whetstone
• Work on the edge?
• Make perfect
• Make sharper
• Put to the grindstone
• Give the edge to?
• Apply to a whetstone
• Make more acute