skull and crossbonesBrE/ˌskʌl ən ˈkrɒsbəʊnz/NAmE/ˌskʌl ən ˈkrɔːsboʊnz/noun[sing.]apictureofahumanskull above two crossed bones, used in the past on the flags of pirateships, andnowusedasawarningoncontainerswithdangeroussubstancesinside骷髅旗,骷髅画(旧时画在海盗旗上,现在作为警示印在危险物品的容器上)