vi to wail as a keener does.
2. keen ·vt to sharpen; to make cold.
3. keen ·superl eager; vehement; fierce; as, a keen appetite.
4. keen ·noun a prolonged wail for a deceased person. ·cf. coranach.
5. keen ·superl sharp; having a fine edge or point; as, a keen razor, or a razor with a keen edge.
6. keen ·superl bitter; piercing; acrimonious; cutting; stinging; severe; as, keen satire or sarcasm.
7. keen ·superl piercing; penetrating; cutting; sharp;
applied to cold, wind, etc, ; as, a keen wind; the cold is very keen.
8. keen ·superl acute of mind; sharp; penetrating; having or expressing mental acuteness; as, a man of keen understanding; a keen look; keen features.