Longman Dictionary of Contemporary English homepage

screw

2 verb
     
screw2
1

attach

[transitive always + adverb/preposition]TBC to attach one thing to another using a screw [↪ nail]
screw something into/onto/to something
The chairs were screwed to the floor.
The wooden frame should be screwed onto the wall.
2

close by turning

[intransitive,transitive always + adverb/preposition] to fasten or close something by turning it, or to be fastened in this way [≠ unscrew]
screw (something) on/onto something
The lens screws onto the front of the camera.
She carefully screwed the cap back onto the toothpaste.
3

paper/cloth

[transitive always + adverb/preposition] also screw up to twist paper or cloth into a small round shape:
She screwed the letter up and threw it in the bin.
screw something (up) into something
I screwed my handkerchief into a ball.
4

sex

[intransitive and transitive] taboo an offensive word meaning to have sex with someone
5

screw you/him etc

spoken not polite an offensive expression used to show that you are very angry with someone
6

cheat

[transitive] not polite to cheat someone in order to get money from them
screw somebody for something
They screwed us for $60 in the end.

➔ have your head screwed on (straight)

at head1 (3c)

screw around

phrasal verb
1 informal to do silly things that may cause trouble [= mess around]:
The kids were screwing around down by the bus station.
2 not polite an offensive expression meaning to have sex with a lot of different people

screw up

phrasal verb
1 informal to make a bad mistake or do something very stupid [= mess up]:
You'd better not screw up this time.
2

screw something ↔ up

informal to spoil something by doing something stupid [= mess something up]:
She realized that she had screwed up her life.
3

screw up your eyes/face

to move the muscles in your face in a way that makes your eyes seem narrow:
He screwed up his eyes against the bright light.
Her face was screwed up with pain.
4

screw somebody ↔ up

informal to make someone feel very unhappy, confused, or upset so that they have emotional problems for a long time [= mess somebody up]:
It really screwed her up when her mother died.
screwed up
5

screw up the/enough courage to do something

also screw up your courage to be brave enough to do something you are very nervous about:
I finally screwed up enough courage to talk to her.

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