boob

n ( sl 讳, 俚) (usu pl 通常作复数) woman's breast （女子的）乳房.

bone, bone china, bone idle, bone-dry, bone-meal, bone-shaker, bonehead, boner, bones, bonfire, Bonfire Night, bongo, bonhomie, bonkers, bonnet, bonnily, bonny, bonus, bony, boo, booby, booby prize (also wooden spoon), booby trap, booby-trap, boodle, boogie, book, book club, book token, book-end, book-keeper, book-plate, bookable, bookbinder [C], bookbinding [U], bookcase, bookie, booking, bookish, bookishness, bookkeeper [C], bookkeeping [U],