crack1 S3 [kræk] v
4¦(not be able to continue)¦
7¦(stop somebody)¦
8¦(open a safe)¦
10 crack it
11 crack a joke
12 crack open a bottle
13 get cracking
14 crack the whip
15 something is not all/everything it's cracked up to be
Phrasal verbs
 crack down
 crack into something
 crack on
 crack up
[: Old English; Origin: cracian]
1.) ¦(BREAK)¦ [I and T]
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)¦ [I and T]
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)¦ [T]
to hit someone or something hard
crack sth on sth
I slipped and cracked my head on the door.
She cracked him over the head with a hammer.
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)¦ [I]
if your voice cracks, it starts to sound different because you are feeling strong emotions
His voice cracked slightly as he tried to explain.
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)¦ [T] [i]informal
to stop a person from being successful
His political enemies have never managed to crack him.
8.) ¦(OPEN A SAFE)¦ [T]
to open a ↑safe illegally in order to steal the things inside it
9.) ¦(COMPUTER)¦ [T]
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
BrE 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
BrE 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.) sth 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 phr v
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 [crack into sth] phr v
to secretly enter someone else's computer system, especially in order to damage the system or steal the information stored on it
A teenager was accused of cracking into the company's network.
crack on phr v
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 phr v
1.) crack (sb) 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!
crack 2
crack2 n
9 a crack on the head
10 a crack in somebody's voice
11 the crack of dawn
13 a fair crack of the whip
1.) ¦(GAP)¦
a very narrow space between two things or two parts of something
crack between
He squeezed into a crack between two rocks.
crack in
He could see them through a crack in the door.
She opened the door a crack and peeped into the room.
2.) ¦(BREAK)¦
a thin line on the surface of something when it is broken but has not actually come apart
crack in
There were several small cracks in the glass.
3.) ¦(WEAKNESS)¦
a weakness or fault in an idea, system, or organization
crack in
The cracks in their relationship were starting to show.
The first cracks are beginning to appear in the economic policy.
4.) ¦(SOUND)¦
a sudden loud sound like the sound of a stick being broken
loud/sharp crack
There was a sharp crack as the branch broke off.
crack of
We could hear the crack of gunfire in the distance.
a crack of thunder
5.) ¦(JOKE)¦ informal
a clever joke or rude remark
crack about
I didn't like his crack about her being overweight.
He's always making cracks about how stupid I am.
6.) ¦(ATTEMPT)¦ informal
an attempt to do something
= ↑shot crack at
I'd like a crack at climbing that mountain.
The competition's open to anyone - why don't you have a crack ?
7.) ¦(DRUG)¦[U]
an illegal drug that some people take for pleasure
crack addicts
8.) ¦(BODY)¦ informal
the space between someone's ↑buttocks
9.) a crack on the head
a hard hit on the head
You've had a nasty crack on the head and you need to rest.
10.) a crack in sb's voice
a change in someone's voice because they are feeling very upset
He noticed the crack in her voice as she tried to continue.
11.) the crack of dawn
very early in the morning
at the crack of dawn
We were up at the crack of dawn.
12.) ¦(COMPUTER)¦
a piece of information or computer ↑code that lets you illegally 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
13.) a fair crack of the whip
BrE informal the same chance as other people to do something
They feel they haven't been given a fair crack of the whip .
crack 3
crack3 adj [only before noun]
1.) with a lot of experience and skill
crack troops
a crack regiment
a crack sportsman
2.) crack shot
someone who is able to shoot a weapon very well and hit the thing they are aiming at

Dictionary of contemporary English. 2013.

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