Cracker

[Sonia]

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

[Sarah]

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.

[Sarah]

opposite of [nigger], an insult to whites... except white people arent dumb enough to walk around calling each other that word because its intended to be demeaning

[Luis Fok]

An unsweetened biscuit.
Ha!

[Sarah]

A racist insult used by blacks against white people that seemingly isnt 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 theyre 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.

[Jason Yan]

Racist term for a white person

[Luis Fok]

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

[Tanya Shivari]

A term in Southeastern United States English to describe poor white trash, derived from the Scottish meaning of the verb to crack, which, in this sense denotes ostentation.

I should explain to your Lordship what is meant by crackers; a name they have got from being great boasters; they are a lawless set of rascalls on the frontiers of Virginia, Maryland, the Carolinas and Georgia, who often change their places of abode. [1766, G. Cochrane]

In more general and contemporary U.S. usage, the term has become an ethnic slur for all Americans of Northern European decent.

[PussyCat]

A small firework, consisting of a little powder inclosed
in a thick paper cylinder with a fuse, and exploding with a sharp
noise; -- often called firecracker.