noun
socket wrench; box wrench; socket spanner
A wrench with a hollow cylinder that fits over a nut or bolt head; common in automotive and mechanical work.
車のタイヤ交換にはボックスレンチが必要だ。
You need a socket wrench to change a car tire.
Variant with interpunct; less common in everyday use.
Loanword from English 'box wrench'.