Longman Dictionary of Contemporary English homepage

Topic: COMPUTERS

Language: Old English
Origin: cracian

crack

1 verb
     
crack1 S3
1

break

[intransitive and transitive] to break or to make something break, either so that it gets lines on its surface, or so that it breaks into pieces:
Don't put boiling water in the glass or it will crack.
Concrete is liable to crack in very cold weather.
He picked up a piece of rock and cracked it in half.
She fell and cracked a bone in her leg.
He cracked a couple of eggs into a pan.
2

sound

[intransitive and transitive]C to make a quick loud sound like the sound of something breaking, or to make something do this:
Thunder cracked overhead.
He cracked his whip and galloped off.
Dennis rubbed his hands together and cracked his knuckles.
3

hit

[transitive] to hit someone or something hard
crack something on something
I slipped and cracked my head on the door.
She cracked him over the head with a hammer.
4

not be able to continue

[intransitive]MI to be unable to continue doing something because there is too much pressure and you do not have the mental strength to continue
crack under
Some young executives crack under the pressure of having to meet tough sales targets every month.
He cracked under interrogation and confessed.
5

voice

[intransitive] if your voice cracks, it starts to sound different because you are feeling strong emotions:
His voice cracked slightly as he tried to explain.
6

solve/understand

[transitive] to find the answer to a problem or manage to understand something that is difficult to understand [= solve]:
I think we've cracked the problem of the computer crashing all the time.
It took them nearly two months to crack the code.
This new evidence could help detectives to crack the case.
7

stop somebody

[transitive] informal to stop a person from being successful:
Political enemies have tried to crack me.
8

open a safe

[transitive]SCC to open a safe illegally in order to steal the things inside it
9TD

computer

[transitive] to illegally copy computer software or change free software which may lack certain features of the full version, so that the free software works in the same way as the full version:
You can find out how to crack any kind of software on the web.
10

crack it

British English informal to manage to do something successfully:
I think we've cracked it!
He seems to have got it cracked.
11

crack a joke

informal to tell a joke:
He kept cracking jokes about my appearance.
12

crack open a bottle

British English informal to open a bottle of alcohol for drinking:
We cracked open a few bottles.
13

get cracking

informal to start doing something or going somewhere quickly:
I think we need to get cracking if we're going to catch this train.
14

crack the whip

informal to make people work very hard
15

something is not all/everything it's cracked up to be

informal used to say that something is not as good as people say it is:
I thought the film was OK, but it's not all it's cracked up to be.

crack down

phrasal verb
to become more strict in dealing with a problem and punishing the people involved
crack down on
The government is determined to crack down on terrorism.
The police are cracking down hard on violent crime.

crack into something

phrasal verb
TD to secretly enter someone else's computer system, especially in order to damage the system or steal the information stored on it [↪ hack]:
A teenager was accused of cracking into the company's network.

crack on

phrasal verb
to continue working hard at something in order to finish it
crack on with
I need to crack on with my project work this weekend.

crack up

phrasal verb
1

crack (somebody) up

to laugh a lot at something, or to make someone laugh a lot:
Everyone in the class just cracked up.
She's so funny. She cracks me up.
2 to become unable to think or behave sensibly because you have too many problems or too much work:
I was beginning to think I was cracking up!
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