Definitions for crackingˈkræk ɪŋ
Random House Webster's College Dictionary
(in the distillation of petroleum) the process of breaking down complex hydrocarbons into simpler compounds with lower boiling points, as gasoline.
Ref: Compare catalytic cracking.
a cracking good race.
(adj.)done with precision; smart:
a cracking salute.
Origin of cracking:
crack, cracking, snap(noun)
a sudden sharp noise
"the crack of a whip"; "he heard the cracking of the ice"; "he can hear the snap of a twig"
fracture, crack, cracking(noun)
the act of cracking something
the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)
bang-up, bully, corking, cracking, dandy, great, groovy, keen, neat, nifty, not bad(p), peachy, slap-up, swell, smashing(adj)
"he did a bully job"; "a neat sports car"; "had a great time at the party"; "you look simply smashing"
The thermal decomposition of a substance, especially that of crude petroleum in order to produce petrol / gasoline.
Very, usually associated with praise.
It was a cracking good show.
The race started at a cracking pace.
We had a cracking time.
The New Hacker's Dictionary
[very common] The act of breaking into a computer system; what a cracker does. Contrary to widespread myth, this does not usually involve some mysterious leap of hackerly brilliance, but rather persistence and the dogged repetition of a handful of fairly well-known tricks that exploit common weaknesses in the security of target systems. Accordingly, most crackers are incompetent as hackers. This entry used to say 'mediocre', but the spread of rootkit and other automated cracking has depressed the average level of skill among crackers.