Pronunciation: (kēn),[key] —adj.,-er, -est. 1. finely sharpened, as an edge; so shaped as to cut or pierce substances readily: a keen razor. 2. sharp, piercing, or biting: a keen wind; keen satire. 3. characterized by strength and distinctness of perception; extremely sensitive or responsive: keen eyes; keen ears. 4. having or showing great mental penetration or acumen: keen reasoning; a keen mind. 5. animated by or showing strong feeling or desire: keen competition. 6. intense, as feeling or desire: keen ambition; keen jealousy. 7. eager; interested; enthusiastic (often fol. by about, on, etc., or an infinitive): She is really keen on going swimming. 8. Slang.great; wonderful; marvelous.
Pronunciation: (kēn),[key] —n. a wailing lament for the dead.