boring

a.令人厌烦的 n.钻孔

bootlegger, bootless, bootstrap, booty, booze, booze-up, boozer, boozy, boracic, borage, borax, Bordeaux, border, border on, borderer, borderland, borderline, bore, boredom, boric, born, born of, born-again, borne, boron, borough, borrow, borrower, borrowing, borrowings, Borstal, bortsch (also borsch), borzoi, bos'n, bosh, bosom, bosom friend, bosomy, boss, boss-eyed,