crack

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crack:

see cocainecocaine
, alkaloid drug derived from the leaves of the coca shrub. A commonly abused illegal drug, cocaine has limited medical uses, most often in surgical applications that take advantage of the fact that, in addition to its anesthetic effect, it constricts small arteries,
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What does it mean when you dream about cracks?

Can represent a flaw or weakness. A crack in a dream could be drawing on the meaning of an idiom, such as “papering over the cracks,” “cracking up,” or “falling through the cracks.”

crack

[krak]
(chemistry)
To break a compound into simpler molecules.
(engineering)
To open something slightly, for instance, a valve.
(science and technology)
A fissure.

crack

A building defect consisting of complete or incomplete separation within a single element or between contiguous elements of constructions.

crack

1. a break or fracture without complete separation of the two parts
2. a physical or mental defect; flaw
3. a broken or cracked tone of voice, as a boy's during puberty
4. Slang a processed form of cocaine hydrochloride used as a stimulant. It is highly addictive
5. Obsolete slang a burglar or burglary

crack

To break into. See cracker.
References in periodicals archive ?
Party sources said in view of Congress president Sonia Gandhi's instructions at the Surajkund conclave, the ministers are expected to crack the whip on tardy bureaucrats and become more accessible to party workers.
The city's leader Rodney should crack the whip at the assembly which seems to prefer spending our money on its members, the latest extravagance being tank traps to stop suicide car-bombers.
MINISTERS have been urged to crack the whip on rogue sex therapists - amid fears that their advice could KILL.
Of all my training, learning to crack the whip was the most fun,' says the star, who was given a gift of her own bullwhip.
Closser is starting to crack the whip against opposing baserunners.
Ellery Hanley intends to crack the whip when he takes charge of St Helens later this year.