1. 坚果;坚果仁
    The firm shelled fruit of some trees and bushes are called nuts. Some nuts can be eaten.

nut的意思

    e.g. Nuts and seeds are good sources of vitamin E.
           坚果和种子里含有丰富的维生素E。

2. 螺母;螺帽
    A nut is a thick metal ring which you screw onto a metal rod called a bolt. Nuts and bolts are used to hold things such as pieces of machinery together.

    e.g. If you want to repair the wheels you just undo the four nuts.
           如果你想修理轮子，只需拧开这4个螺母就行了。
    e.g. ...nuts and bolts that haven't been tightened up.
           没有拧紧的螺母和螺栓

3. 对…着迷的人;…迷
    If you describe someone as, for example, a football nut or a health nut, you mean that they are extremely enthusiastic about the thing mentioned.

    e.g. ...a football nut who spends thousands of pounds travelling to watch games.
           花上几千英镑四处去看比赛的足球迷

4. 狂热的;执著的
    If you are nuts about something or someone, you like them very much.

    e.g. They're nuts about the car...
           他们对汽车非常痴迷。
    e.g. She's nuts about you.
           她迷恋上你了。

5. 疯子;狂人
    If you refer to someone as a nut, you mean that they are mad.

nut什么意思

    e.g. There's some nut out there with a gun.
           外边有个拿着枪的疯子。

6. 发疯的;愚蠢的
    If you say that someone goes nuts or is nuts, you mean that they go crazy or are very foolish.

    e.g. You guys are nuts...
           你们这些人简直是有毛病。
    e.g. A number of the French players went nuts, completely out of control.
           有几个法国运动员简直是疯了，完全失去了控制。

7. (一对)睾丸
    A man's testicles can be referred to as his nuts .

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8. 脑袋
    Your head can be referred to as your nut .

9. 大发雷霆;极端恼火
    If someone goes nuts, or in British English does their nut, they become extremely angry.

    e.g. My father would go nuts if he saw bruises on me...
           如果我爸爸看到我脸上有伤痕，他会气疯的。
    e.g. We heard your sister doing her nut.
           我们听到你妹妹在大发脾气。

10. 具体内容;基本内容
    If you talk about the nuts and bolts of a subject or an activity, you are referring to the detailed practical aspects of it rather than abstract ideas about it.

    e.g. He's more concerned about the nuts and bolts of location work.
           他更为担忧的是外景拍摄的具体内容。

11. 难对付的人
      If you think someone is difficult to deal with, you can say they are a tough nut or a hard nut .

      e.g. The Daily Express describes Dr Carey as a pretty tough nut.
             《每日快报》把凯里医生说成是特别难对付的家伙。

12. 棘手的事;难以解决(或理解)的问题
      If you say that something is a hard nut to crack or a tough nut to crack, you mean that it is difficult to do or to understand.

      e.g. Getting out there is in many ways the hardest nut to crack.
             从很多方面来说，出去交际是最难以做到的事了。