bottom

n.底，底部；臀部；末端，尽头；来源

botanize, -ise, botany, botch, botch (also botch-up), botcher, both, both...and, both...and..., bother, botheration, bothersome, bottle, bottle bank, bottle-feed, bottle-green, bottle-neck, bottle-opener, bottle-party, bottleneck, bottler, bottom drawer (US hope chest), bottom line (infml 口), bottom-line, bottomless, bottommost, botulism, boudoir, bouffant, bougainvillaea, bough, bought, bouillon, boulder, boulevard, bounce, bouncer (also bumper), bouncing, bouncy, bound, boundary,