keen

adjective1 of 2

being eager or excited for something to happen

• “Flies have a keen sense of smell for decaying matter.”Tatoeba
• “I was keen on classical music in my school days.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

verb2 of 2

To make cold, to sharpen.