night-deposit safe; night depository
A secure drop box at a bank or financial institution for depositing cash or checks after business hours.
I deposited the day's earnings in the night-deposit safe.
Standard kanji spelling for this compound noun.
Variant using the iteration mark 々; the standard form is 夜間預金金庫.
Compound of 夜間 (yakan, 'nighttime') + 預金 (yokin, 'deposit') + 金庫 (kinko, 'safe').