1
noun (common) (futsuumeishi)
cryptographic key;encryption key
1
noun (common) (futsuumeishi)
key
2
noun (common) (futsuumeishi)
lock
ドアを開ける際に、私は鍵を壊してしまった。
In opening the door, I broke the lock.
3
noun (common) (futsuumeishi)
key (to a problem, success, etc.);clue
Other forms
鑰 【かぎ】 (rarely used kanji form)
1
noun (common) (futsuumeishi)
key (on a piano, organ, etc.)