box — At the Post Office box /bɒks/ noun CEFR A1 A container, often made of cardboard, used to pack and send things. “Put the books in a box to post them.” Related words in this scene queuesignstampformpostcardtapereceiptweighcountersendaddressreceivesenderletterlabelenvelopescalewrapparcelpostboxpackagemailpostmandeliveryweightcourierpostcodeairmaildeliverfragiletracking Practice this word Create worksheet