PMWa long heavy piece of wood, used in wars in the past to break through walls or doors 〔古代战争攻城时用于捣毁墙、门的〕破城锤
Examples from the Corpus
battering ram• We staggered out and began to use it as a battering ram against the locked door.• In fact Pachycephalosaurus had a 10-inchthickskull, and probably used it as a battering ram in ritualcontests.• He is a powerhouse, a battering ram, but also has touch and an eye for goal.• I heard the hiss of arrows and the crashing of some makeshiftbattering ram buckling the beams of the iron-studded gates.• Nizan is always willing to oblige with the battering ramtechnique, if required.