Whet

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Whet

(v. t.) To rub or on with some substance, as a piece of stone, for the purpose of sharpening; to sharpen by attrition; as, to whet a knife.
(v. t.) To make sharp, keen, or eager; to excite; to stimulate; as, to whet the appetite or the courage.
(n.) The act of whetting.
(n.) That which whets or sharpens; esp., an appetizer.