nut

nut
noun
  1. a fruit consisting of a hard or tough shell around an edible kernel
    坚果
    ■the hard kernel of such a fruit
    果仁
    ■(informal)a person's head
    (非正式)人头
    ■(一般作 nuts)a small lump or knob of something, especially coal
    （尤指煤的）块，团
    ■(一般作 nuts)compressed animal feed in the form of small cylindrical pellets
    （压缩成圆柱球形小丸的）饲料
    ■(nuts)(valgar slang)a man's testicles
    (粗俚)睾丸
  2. a small flat piece of metal or other material, typically square or hexagonal, with a threaded hole through it for screwing on to a bolt as a fastener
    （正方形或六角形的）螺母，螺帽
    ■the part at the lower end of the bow of a violin or similar instrument, with a screw for adjusting the tension of the hair
    （小提琴或类似乐器琴弓末端的）松紧螺丝
  3. (informal)a crazy or eccentric person
    (非正式)疯子；怪人
    ■[with adj. or noun modifier]a person who is excessively interested in or enthusiastic about a specified thing
    (非正式)狂热爱好者
    a football nut.
    足球狂；足球迷。
  4. the fixed ridge on the neck of a stringed instrument over which the strings pass
    （弦乐器上的）琴马
(nutted, nutting)
  1. [with obj.](informal)butt (someone) with one's head
    (非正式)用头撞
  2. [no obj.][usu. as noun nutting](archaic)gather nuts
    (古)采集坚果
常用词组
do one's nut
  1. (Brit. informal)be extremely angry or agitated
    (英，非正式)大发雷霆
nuts and bolts
  1. (informal)the basic practical details
    (非正式)基本情况；具体细节
    the nuts and bolts of public policy.
    公共利益准则的具体细节。
off one's nut
  1. (informal)out of one's mind; crazy
    (非正式)发疯的，发狂的
a tough (或 hard) nut
  1. (informal)someone who is difficult to deal with; a formidable person
    (非正式)难以对付的人；可怕的人
a tough (或 hard) nut to crack
  1. (informal)a difficult problem or an opponent hard to beat
    (非正式)难以解决的问题；棘手的事情；劲敌
use (或 take) a sledgehammer to crack a nut
  1. (informal)use disproportionately drastic measures to deal with a simple problem
    (非正式)小题大做
派生
nut-like
adjective
语源
  1. Old English hnutu, of Germanic origin; related to Dutch noot and German Nuss
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