
Whetstone
Tool Maintenance
Whetstone is often associated with the care and maintenance of tools.

After buying a new pocketknife, learn to maintain its edge with a whetstone.
Not for Cooking
Despite 'whet' sounding like 'wet', a whetstone is not intended for use in cooking.

Remember, a whetstone is for sharpening knives, not an ingredient for your stew.
Metaphorical Use
Used metaphorically, it implies something that enhances or stimulates.

Challenging puzzles are a whetstone for the mind.
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