noun
safe deposit box
Refers to a secure box rented at a bank or hotel for storing valuables. Wasei-eigo from English 'safety box'.
wasei-eigo (Japanese-coined English), from safety box
ホテルのセイフティボックスにパスポートを預けた。
I left my passport in the hotel's safe deposit box.
noun
small safe
A compact, portable safe for home or office use, not necessarily a bank-rented box.
自宅に小さなセイフティボックスを置いている。
I keep a small safe at home.