1) [I/T] if something cracks, or if you crack it, a line or long narrow hole appears on its surface, but it does not break into piecesThe ice was starting to crack at the edges.[/ex]I dropped a plate and cracked it.[/ex]2) [T] to break something open in order to get what is insideCrack the egg open with a knife.[/ex]3) [I] to make a short loud noise like a small explosionThunder cracked overhead.[/ex]4) [T] to accidentally hit a part of your body against something with a lot of forceDad fell and cracked his head against the door.[/ex]5) [I] to say or do things that you would not normally say or do, because you are very tired or because someone is threatening youShe won because her opponent cracked under the pressure.[/ex]6) [I] if your voice cracks, it goes higher and lower in a way that you cannot control7) [T] to solve a complicated problem, or to find the answer to a mysteryDetectives believe they can crack the case.[/ex]•crack a joke — informal to tell a joke[/ex]get cracking — informal to start doing something or going somewhere immediately[/ex]sth is not all it's cracked up to be — informal used for saying that something is not as good as people say it is[/ex]- crack down- crack up- crack (sb) upIInouncrack */[kræk]1) [C] a line on a surface where something is beginning to break apartcracks in the walls[/ex]2) [C] a narrow opening between two thingsShe looked through the crack in the curtains.[/ex]3) [C] a sign that an organization, relationship, or plan is becoming weakCracks had started to appear in their marriage.[/ex]4) [C] a short loud noise5) [C] informalan attempt to do somethingWe thought we'd have a crack at running our own business.[/ex]6) [C] informala rude or insulting joke about someone or something7) [U] a pure form of the illegal drug COCAINE•at the crack of dawn — extremely early in the morning[/ex]slip/fall through the cracks — to not be helped by a system that is designed to help you[/ex]IIIadjcrack [kræk]very skilful as a result of being trained well
Dictionary for writing and speaking English. 2014.