latchkey
🇺🇸
/ˈlætʃkiː/
🇬🇧
/ˈlætʃkiː/
A small key that opens the front door of a house.
The latchkey children were used to coming home from school and letting themselves in.
那些带钥匙的孩子习惯了放学回家并自己开门。