A computer expert who specialises in removing protection mechanisms from commercial software. These protections often limit (cripple) the software functionality or render the software unoperatable after a certain number of uses or when a expiry date is reached.
This activity is ilegal in many countries because it forces the software developers to increase the price of their products in order to recover lost revenue.
A cracker will usually have low level programming experience and a detailed technical understanding of commercial software protections.

Originally the white slave driver because he would "crack" the whip, hence the noun cracker.

Noun. Slang word used to refer to those of European ancestry. The word is thought to have either derived from the sound of a whip being cracked by slave owners, or because crackers are generally white in color.

opposite of nigger, an insult to whites... except white people aren't dumb enough to walk around calling each other that word because it's intended to be demeaning

A racist insult used by blacks against white people that seemingly isn't wrong, yet it is illegal for us to defend ourselves and call them darkies or nigger. Racism against whites is racism just the same, people. Get some common sense. If black people think they are the shit like they're better than everyone else, they are mistaken.
No one is fuckin better than anyone they are equal, until your actions or reputation lowers your social status and respect, of course.

An unsweetened biscuit.
Ha!

Racist term for a white person

1:A firecracker
2:A thin, crisp wafer
3:One whom cracks illegally into another's computer or network
4:A racist term used against Caucasians/Whites