noun

key

Translation

key, solution, tone, crucial

I can't find my house key.

Communication is the key to success.

Press the enter key.

He is a key figure in the company.

((a/the)) key ((for/to sth.)) a tool for a lock or a solution I need the key for the back door.

((a/the)) key ((on sth.)) a button on a device Press the 'F1' key on the keyboard.

key ((noun)) main or crucial He was a key player on the team.

Synonyms: (solution) answer, secret; (important) crucial, essential

From Old English 'cǣg'. Its ultimate origin is unknown.

A 'key' unlocks everything: a door, a problem, a piece of music, or the meaning of a map.