keyhole
The hole in a lock where a key is inserted.
I inserted the key into the keyhole.
鍵穴から中を覗く。
Peek inside through the keyhole.
Standard kanji spelling.
Mixed kanji-katakana spelling, sometimes used for clarity or style.
Search-only form; not a standard written variant.
Compound of 鍵 (kagi, 'key') and 穴 (ana, 'hole').