Related Clues:

• Revise for the better
• Strop
• Polish, as one's skills
• Improve an edge
• Work on
• Make more effective
• Sharpen 1-Across
• Convert to a computer system, e.g.
• Opposite of dull
• Perfect one's skills
• Improve, as a skill
• Put to an oilstone
• Ready the machete
• Ready, as a machete
• Make more perfect