KEEN, a. 1. Eager; vehement; as hungry curs too keen at the sport. The sheep were so keen on the acorns--2. Eager; sharp; as a keen appetite.3. Sharp; having a very fine edge; as a keen razor, or a razor with a keen edge. We say a keen edge, but a sharp point.4. Piercing; penetrating; severe; applied to cold or to wind; as a keen wind; the cold is very keen.5. Bitter; piercing; acrimonious; as keen satire or sarcasm. Good father cardinal, cry thou amen, To my keen curses.KEEN, v.t. To sharpen. [Unusual.]
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