whet

1. An act of sharpening something by rubbing on an object, especially a whetstone.
2. An item of drink or food consumed as an appetizer or to ward off hunger until a meal; specifically, a small amount of liquor drunk as an appetizer; a dram, a nip. (figuratively)
3. A thing which makes one's desire, interest, etc., more keen; an incitement, an inducement. (figuratively)

الجمع whets