Crack means to make a sudden breaking sound or to split something, without it breaking into separate pieces.(verb)
The definition of crack is a sudden, sharp breaking sound or a break in something.(noun)
Crack is defined as slang for a highly purified form of cocaine in hard pebble-sized pieces for smoking.(noun)
An example of crack is what former Washington, D.C. mayor Marion Barry was caught smoking.
See crack in Webster's New World College Dictionary
Origin: ME craken < OE cracian, to resound, akin to Ger krachen < IE base *ger-: see crow
Origin: < ?
See crack in American Heritage Dictionary 4
verb cracked, crack·ing, cracks verb, intransitive
Origin: Middle English craken
Origin: , from Old English cracian; see gerə-2 in Indo-European roots.
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