keen: Meaning and Definition of

keen

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. great; wonderful; marvelous.

keen

1. a wailing lament for the dead.

1. to wail in lamentation for the dead.

1. to bewail or lament by or with keening.