キーkey (lock, keyboard, piano, clue, island, cay, etc.)

Common

1. Noun

   1. 1.

      key (for a lock)

   2. 2.

      key (of a piano, organ, computer keyboard, etc.)

   3. 3.

      key

      Music,

      See Also:

      • 調

   4. 4.

      key (to solving something), clue

2. Prenominal noun/verb

   1. 5.

      key (person, point, etc.), most important