n (1) 牛肉 (flesh of a full-grown ox， bull or cow， used as meat) [U]：～cattle 肉用牛;prefer～to pork 喜歡吃牛肉勝過豬肉;～stew 燉牛肉;～sandwiches牛肉三明治;a joint of roast～一大塊烤牛肉;
(2) 肉用牛 (any form of cattle，esp ox， etc raised for meat) [C];
(3) 肌肉;臂力 (human strength or muscles) [U] (infml)：Come on， man， put some～into the job! 喂，老兄，賣點力氣干! He has a lot of～on him.他身上肌肉鼓鼓的。
(4) 牢騷 (complaint) [C] (sl)：She's got a lot of～s about her boss.她對老板滿腹牢騷。
→′beefy adj 強壯的;′beefburger n 漢堡包;′beefsteak n 牛排;?beef′tea n 用牛肉做成的濃湯;
vi發(fā)牢騷 (complain in an annoying way) [I， I+prep(about)](sl)：What are you～ing about now? 你在發(fā)什么牢騷?～about pay 因報酬發(fā)牢騷;
beef up (v adv) (AmE) (infml) 增強;加重 (vt)：We must～up the army with new young soldiers. 我們必須補充新兵以增強軍隊的實力。