billhook

n long-handled tool with a curved blade for pruning trees, etc （修剪树枝等用的）长柄钩刀.

bile, bile-duct, bilge, bilharzia, bilingual, bilingually, bilious, biliousness, bilk, bill, bill of exchange, bill of fare, bill of lading, bill of rights, bill of sale, billabong, billboard, billet, billet-doux, billfold, billiard-, billiards, billion, billow, billowy, billposter (also billsticker), billy, billy-goat, billy-oh (also billy-o), biltong, bimetallic, bimetallism, bimonthly, bin, binary, binary digit, binary notation system, binary star, bind, binder,