battalion

n (abbr 缩写 Bn) army unit composed of several companies and forming part of a regiment or brigade 营（陆军单位）.

bath mat, bath-tub, bathe, bathed, bather, bathetic, bathing, bathing suit, bathing-cap, bathing-costume (also bathing-suit), bathos, bathrobe (also robe), bathroom, bathysphere, batik, batiste, batman, baton, bats, batsman, batten, batter, battered, batteries, battering ram, battering-ram, battery, battery farm, battle, battle-cruiser, battle-cry, battleaxe, battledress, battlefield, battlefield, battleground, battlements, battleship, batty, bauble, baulk,