bouncer (also bumper)

n 1 (in cricket) bowled ball that bounces high and forcefully （板球）反弹力大的高球: bowl sb a fast bouncer 向某人投掷反弹力大的快速高球. 2 (infml 口) person employed by a club, restaurant, etc to throw out trouble-makers （俱乐部, 饭店等雇用的）驱逐捣乱者的人.

bottle-opener, bottle-party, bottleneck, bottler, bottom, bottom drawer (US hope chest), bottom line (infml 口), bottom-line, bottomless, bottommost, botulism, boudoir, bouffant, bougainvillaea, bough, bought, bouillon, boulder, boulevard, bounce, bouncing, bouncy, bound, boundary, bounded, bounden, bounder, boundless, boundlessly, bounds, bounteous, bounteously, bounteousness, bountiful, bountifully, bounty, bouquet, bouquet garni, bourbon, bourgeois,