n (1)(手，脚的)指甲;爪(hard thin covering on the upper surface of ends of the fingers or toes of men，monkeys，etc;claw of a bird or an animal) [C]： finger-/toe-～s 手指/脚趾甲;trim/dye/cut/bite/paint/break one's～s 修/染/剪/咬/涂/折断指甲

(2)钉子(thin pointed piece of metal used to fasten pieces of wood，etc together)[C]：hit/drive in the～with a hammer 用榔头钉钉子/把钉子钉进去;Do you prefer using～s or screws when you make furniture? 你打家具时喜欢用钉子还是螺丝钉? He hammered a～into the wall and hung a picture on it. 他往墙上钉了颗钉子，在上面挂了一幅画。

a nail in sb's/sth's coffin 促使某人(某事)提早完蛋的东西：Credit cards are the first～s in the coffin of traditional financial methods. 信用卡是最早促使传统金融运作方式完结的东西。

on the nail(infml) 立即(付款)：I prefer to pay cash on the～if I have money. 我要是有钱，愿意立即付款。

→′nail-brush n 指甲刷;′nail-file n 指甲锉;′nail-scissors n 指甲剪;′nail-varnish(AmE ′nail-polish) n 指甲油;

v (1) 钉住(牢) (fasten sth with nails)[T+n+prep(to/on)]：～a shelf to the wall/a sign to the post/a notice to the bulletin board 把架子钉在墙上/把招牌钉在柱子上/把通知钉在布告栏上;～ a lid on a box/a mirror on the wall 给箱子钉上盖子/把镜子钉在墙上;

(2)抓住，捕获 (catch or seize(sb or sth)) [T+n](infml)：～a thief/an apple 抓住一个贼/一个苹果;She had been avoiding me for weeks but I finally～ed her at her office. 她已经躲了我好几个星期，最后我在她的办公室堵住了她。

(3)揭露(穿) (discover or expose)[T+n](infml)：～a lie/the truth/the myth 揭穿谎言/揭露真相/戳穿骗人的鬼话：They～ed the source of the story and finally forced a retraction. 他们揭露了谎言的根源，最后迫使其消声匿迹。

nail down (v adv) 1)用钉钉住(vt)：The storekeeper～ed down the tea chest. 店主把茶叶箱钉上。2)明确规定：Signing the contract will～down our agreement. 合同一经签字，我们达成的协议就不可改变了。3)使说出明确的意图或打算：She's finally agreed to do the job but I can't～her down to a date. 她最后同意做这个工作，但我未能使她明确地说出着手的日期。

nail on (v adv) nail sth on/onto/to sth(v prep) 用钉子把……钉在……上面(vt)：He～ed a rafter onto the beam. 他把一根椽子钉在房梁上。

nail up(v adv) 1)将……钉在墙上(或高处)(vt)：He～ed the picture up on the wall. 他把图片钉在墙上。2)把(门、窗等)钉死(牢)(vt)：He tried to open the door but it was～ed up. 他企图把门打开，但门已被钉死。