screw 1 S3 / skru / 名词 [可数名词]

1 a thin pointed piece of metal that you push and turn in order to fasten pieces of metal or wood together → nail :

Fix the frame in position and tighten the screws .

2 informal not polite

a) an offensive word meaning an act of having sex

b) a good screw a very offensive word for someone who is good at having sex

3 have a screw loose informal to be slightly crazy

4 put/tighten the screws on somebody informal to force someone to do something by threatening them :

The government has started to tighten the screws on illegal share dealers.

5 British English informal a prison officer – used especially by prisoners