cracker:
(plural: ‘crackers‘; pronunciation: both the ‘c’ in this word are said with a ‘k’ sound)
a couple of crackers, knows everything
a very nice-looking woman;
a poor white person, especially a man from the USA;
(in British English) a person who has great ability in some field;
a thief;
a person who uses other’s computer without permission, especially to spoil the data, etc.; a hacker,
a computer cracker (hacker)
Elisa is a cracker; everybody likes her and wants to be with her.
When we have a problem in solving our office problems, we all rush to the help of Mr Rao the cracker who has a solution for every problem.
Joe suspects that there is a cracker among his colleagues who has been fiddling with his computer system and erasing most of the data he’s storing in.
The difference between a computer hacker and a computer cracker is that a hacker is a person who tries to break into somebody else’s system and change the software so that the system works differently, which some computer experts believe is a minor nuisance, whereas a cracker is a criminal who breaks into somebody else’s system in order to steal some information or to feed some wrong information, which experts believe is a major crime.
Ted is very cross with his coloured classmates because they are making fun of him by calling him a cracker!
(a fire cracker)
(crackers -- crispy biscuits)
