keyhole
🇺🇸
/ˈkiːhəʊl/
🇬🇧
/ˈkiːhəʊl/
a small hole where you put a key to unlock something
She peeked through the keyhole to see if anyone was in the room.
방 안에 누군가 있는지 보기 위해 그녀는 열쇠 구멍으로 들여다보았다.