Related Clues:

• Honer's concern
• It'll give you an edge
• It'll give you the edge
• Trim, in a way
• Stimulate, as an appetite
• Improve, as one's skills
• Perfect, as one's skills
• Word with cutting or leading
• Advan-tage
• What a sphere lacks
• Stropping result
• Barely better
• Beat by a small margin
• Razor feature
• Sharpen, as an appetite