词典释义：
a small metal spike with a broadened flat head, driven typically into wood with a hammer to join things together or to serve as a peg or hook
钉子。
a horny covering on the upper surface of the tip of the finger and toe in humans and other primates
（人类或其他灵长类的）指甲。
an animal's claw
（动物的）趾甲；爪。
a hard growth on the upper mandible of some soft-billed birds
（一些软喙鸟类）上喙的硬甲壳。
〈史〉 纳尔：
a measure of length for cloth, equal to 2((1/4)) inches
纳尔（布匹长度单位，相当于２((１／４))英寸）。
a measure of wool, beef, or other commodity, roughly equal to 7 or 8 pounds
纳尔（羊毛、牛肉或其他商品的计量单位，约等于７或８磅）。
[with obj. and adverbial of place]fasten to a surface or to something else with a nail or nails
把…钉牢，钉住
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the strips are simply nailed to the roof .板条只是钉在房顶上而已。
〈非正式〉 揭穿（某人）；抓住，逮住
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have you nailed the killer? 你有没有抓住杀手？
expose (a lie or other instance of deception)
揭穿（谎言，欺骗）。
〈非正式〉 （比赛选手）大力扣杀（球）
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she was stretched to the limit and failed to nail the smash .她使出浑身解数未能把球扣死。
【棒球】 （外场手）把（跑垒者）杀出局。
〈主北美〉 （选手）击败（或智胜）（对手）
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Navratilova tried to nail her on the backhand side .纳夫拉蒂洛娃力图打对方的反手来击败她。
(of a player)secure (especially a victory) conclusively
（选手）锁定（胜局）。
〈粗俚，主美〉 （男性）与…性交。
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fight tooth and nail 见TOOTH .hard as nails （of a person） very tough; completely callous or unfeeling （人）强硬的；铁石心肠的，冷酷无情的 -
nail one's colours to the mast 见MAST 1 .a nail in the coffin an action or event regarded as likely to have a detrimental or destructive effect on a situation, enterprise, or person 催命符；致命一击this was going to put the final nail in the coffin of his career . 这对他的事业来说会是个致命打击 -
on the nail （〈北美〉 亦作on the barrelhead ） （of payment） without delay （付款）当场（的），立即（的）
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nail someone down elicit a firm promise or commitment from someone 使承诺I can't nail her down to a specific date . 我无法让她说定一个日子 -
nail something down 1 fasten something securely with nails 钉牢，钉住 -
2 identify something precisely 弄清，确定something seems unexpected — I can't nail it down, but it makes me uneasy . 好像出了点事—— 我弄不清楚是什么，可它让我感到不安 -
3 secure something, especially an agreement 敲定；确保（某事物，尤指协议） -
nail something up fasten a door or window with nails so that it cannot be opened 把（门、窗等）钉死
"Old English
