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CPR abbreviation of "cardiopulmonary resuscitation."
CPU abbreviation of "central processing unit," (in computing) the part of a computer that interprets program commands and executes its instructions.
Cr symbol of the chemical element chromium.
crab1 any of various ten-legged marine crustaceans, having broad, flat bodies, eyes on short stalks, and strong pincers on the front legs. The meat of some kinds of crabs is commonly eaten by humans. [8 definitions]
crab2 (informal) a complaining or ill-tempered person; grouch. [2 definitions]
crab apple any of various small, hard, tart apples, wild or cultivated, used esp. for making jelly. [2 definitions]
crabbed irritable or ill-tempered; grouchy. [2 definitions]
crabby grouchy; irritable; bad-tempered.
crab grass any of several wild, coarse grasses that easily root, spread, and displace other plants and grasses, esp. in cultivated lawns.
crab louse a louse that infests the human pubic area or armpit and causes severe itching.
Crab nebula a nebula in the constellation Taurus that contains a pulsar.
crack to break apart with a snapping sound. [15 definitions]
crackbrain a person without sense or reason; one who is insane.
crackbrained utterly foolish or insane.
crackdown an increase in the severity with which rules, laws, or the like are enforced, esp. to combat abuses or rectify a problem.
crack down on to treat more harshly.
cracked partially separated; broken. [3 definitions]
cracked wheat coarsely processed wheat.
cracker a thin, crisp biscuit or wafer, not usually sweetened. [4 definitions]
cracker-barrel resembling the rambling, informal discussions of persons gathered at a country store.
crackerjack an excellent person or thing. [2 definitions]