battering ram

攻城槌

bathetic, bathing, bathing suit, bathing-cap, bathing-costume (also bathing-suit), bathos, bathrobe (also robe), bathroom, bathysphere, batik, batiste, batman, baton, bats, batsman, battalion, batten, batter, battered, batteries, battering-ram, battery, battery farm, battle, battle-cruiser, battle-cry, battleaxe, battledress, battlefield, battlefield, battleground, battlements, battleship, batty, bauble, baulk, bauxite, bawdily, bawdiness, bawdy, bawl,