nut 1 S3 / nʌt / 名词 [可数名词]

1 food a dry brown fruit inside a hard shell, that grows on a tree :

a pine nut

roasted nuts

We were sitting round the fire cracking nuts (= opening them ) .

2

tool a small piece of metal with a hole through the middle which is screwed onto a bolt to fasten things together :

Use a wrench to loosen the nut.

3 crazy person informal someone who is crazy or behaves strangely :

My dad is such a nut.

What are you, some kind of nut?

4 golf/opera etc nut informal someone who is very interested in golf etc → fanatic :

You don’t have to be a sports nut to enjoy skiing.

5 sex organ nuts [复数形式] informal a man’s testicle s

6 the nuts and bolts of something informal the practical details of a subject or job :

the nuts and bolts of government

7 tough/hard nut informal someone who is difficult to deal with :

He may have softened a bit in his old age but he’s still a tough nut.

8 a hard/tough nut to crack a difficult problem or situation :

Celtic have lost only once this season and will be a tough nut to crack.

9 be off your nut British English spoken informal to be crazy :

You must be off your nut!

10 do your nut British English spoken to become very angry or worried :

I didn’t get home till three – my mum did her nut!

11 head British English spoken old-fashioned your head or brain

sb’s nut

Oh come on, use your nut !