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Related Clues:
- Apply to an emery wheel
- Work on, as one's skills
- You might rub a knife across it
- Perfect, perhaps
- Make sharp
- Gain an edge
- Stimulate (appetite)
- Ready a machete
- Spark, as an appetite
- Give an edge to?
- Excite, as an appetite
- Stimulate, as one's appetite
- Make sharper, as a blade
- Polish one's skills
- Sharpen the blade of (a tool/weapon)