strong ‧ box /ˈstrɒŋbɒks $ ˈstrɒːŋbɑːks/ BrE AmE noun [countable]
a box, usually made of metal, that can be locked and that valuable things are kept in SYN safe
strong ‧ box /ˈstrɒŋbɒks $ ˈstrɒːŋbɑːks/ BrE AmE noun [countable]
a box, usually made of metal, that can be locked and that valuable things are kept in SYN safe
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012