1. A thin and usually jagged space opened in a previously solid material.
    A large crack had formed in the roadway.
  2. A narrow opening.
    We managed to squeeze through a crack in the rock wall.
    Open the door a crack.
  3. A sharply humorous comment; a wisecrack.
    I didn't appreciate that crack about my hairstyle.
  4. A potent, relatively cheap, addictive variety of cocaine; often a rock, usually smoked through a crack-pipe.
  5. The sharp sound made when solid material breaks.
    The crack of the falling branch could be heard for miles.
  6. Any sharp sound.
    The crack of the bat hitting the ball.
  7. An attempt at something.
    I'd like to take a crack at that game.
  8. vagina.
    I'm so horny even the crack of dawn isn't safe!
  9. The space between the buttocks.
    Pull up your pants! Your crack is showing.
  10. Conviviality; fun; good conversation, chat, gossip, or humourous storytelling; good company.
    The crack was good.
    That was good crack.
    He/she is quare good crack.
    The party was great crack.
  11. Business/events/news
    What's the crack?
  12. A program or procedure designed to circumvent restrictions or usage limits on software.
    Has anyone got a crack for DocumentWriter 3.0?
  13. a meaningful chat.
  14. Extremely silly, absurd or off-the-wall ideas or prose.
  15. The tone of voice when changed at puberty.
  16. A mental flaw; a touch of craziness; partial insanity.
    He has a crack.
  17. A crazy or crack-brained person.
  18. A boast; boasting.
  19. Breach of chastity.
  20. A boy, generally a pert, lively boy.
  21. A brief time; an instant; a jiffy.
    I'll be with you in a crack.


  1. To form cracks.
    It's been so dry, the ground is starting to crack.
  2. To break apart under pressure.
    When I tried to stand on the chair, it cracked.
  3. To become debilitated by psychological pressure.
    Anyone would crack after being hounded like that.
  4. To yield under interrogation.
    When we showed him the pictures of the murder scene, he cracked.
  5. To make a cracking sound.
    The bat cracked with authority and the ball went for six.
  6. To change rapidly in register.
    His voice cracked with emotion.
  7. To alternate between high and low register in the process of eventually lowering.
    His voice finally cracked when he was fourteen.
  8. To make a sharply humorous comment.
    "I would too, with a face like that," she cracked.
  9. To make a crack or cracks in.
    The ball cracked the window.
  10. To break open or crush to small pieces by impact or stress.
    You'll need a hammer to crack a black walnut.
  11. To strike forcefully.
    She cracked him over the head with her handbag.
  12. To open slightly.
    Could you please crack the window?
  13. To cause to yield under interrogation or other pressure. (Figurative)
    They managed to crack him on the third day.
  14. To solve a difficult problem.
    I've finally cracked it, and of course the answer is obvious in hindsight.
  15. To overcome a security system or a component.
    ''It took a minute to crack the lock, three minutes to crack the security system, and about twenty minutes to crack the safe.
    They finally cracked the code.
  16. To cause to make a sharp sound.
    to crack a whip
  17. To tell (a joke).
    The performance was fine until he cracked that dead baby joke.
  18. To break down (a complex molecule), especially with the application of heat: to pyrolyse.
    Acetone is cracked to ketene and methane at 700 °C.
  19. To circumvent software restrictions such as regional coding or time limits.
    That software licence will expire tomorrow unless we can crack it.
  20. To open a canned beverage, or any packaged drink or food.
    I'd love to crack open a beer.
  21. To brag, boast.
  22. To be ruined or impaired; to fail.


  1. Highly trained and competent.
    Even a crack team of investigators would have trouble solving this case.
  2. Excellent, first-rate, superior, top-notch.
    She's a crack shot with that rifle.

The above text is a snippet from Wiktionary: crack
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