·vi To wail as a keener does.
II. Keen ·vt To Sharpen; to make cold.
III. Keen ·superl Eager; vehement; fierce; as, a keen appetite.
IV. Keen ·noun A prolonged wail for a deceased person. ·cf. Coranach.
V. Keen ·superl Sharp; having a fine edge or point; as, a keen razor, or a razor with a keen edge.
VI. Keen ·superl Bitter; piercing; acrimonious; cutting; stinging; severe; as, keen satire or sarcasm.
VII. Keen ·superl Piercing; penetrating; cutting; sharp;
— applied to cold, wind, etc, ; as, a keen wind; the cold is very keen.
VIII. Keen ·superl Acute of mind; sharp; penetrating; having or expressing mental acuteness; as, a man of keen understanding; a keen look; keen features.