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22.
1. 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

2. In more general and contemporary U.S. usage, the term has become an ethnic slur for all Americans of Northern European decent.
1. Look at that cracker over there with the confederate flag license plate on his pickup.

2. Shut up, cracker, 'fore I beat yo' scrawny white ass.
by W. Elliott April 05, 2006
 
23.
The word that blacks use to insult white people; Another word like nigger, but for whites
Jarad: Dude, if i get called a cracker one more time imma call someone a nigger!
Black guy: Move cracker
Jarad: NIGGER!!!
Black guy (now with gun): What!!!
Jarad: NOO!!!!
by Mark The Fat Kid November 11, 2005
 
24.
A cracker is not a slave owner or overseer cracking a whip. "Cracker" predates the plantation era; and it refers to someone who would have been too poor to own slaves. It is a farmers who raised only cracked products, such as wheat and corn. "Cracker" was a derogatory term applied to these poor farmers from before the American Revolution.
Sometimes the owners of the general stores wouldn't accept anything but cotton, which forced a lot of crackers to change their crops.
by Ditch November 18, 2005
 
25.
An insult used by people who aren't white to insult white people, despite the fact that a cracker is a type of food, and it's not really insulting at all.
"Shut yo mouf cracka' ass bitch"
by robart January 23, 2005
 
26.
This Is Not ok for BLACK People to every SAY!!!!! It's like a white person saying nigger!! It's not cool! So White People don't say nigger and BLACK PEOPLE DON'T EVER SAY CRACKER!!!!!!!!!!!
I'm a racist BLACK person who thinks its not cool for a white person to say nigger ,but it's ok for me to say CRACKER!
by Devman1211 May 04, 2006
 
27.
adj. A slang name used by any other race
to identify the white race in anger.
"That cracker down the street ripped me off"
"All these crackers are making me nervous"
"Crackas & Niggas just can't get along"
by ShOvel July 24, 2003
 
28.
1. A derogatory racist connotation for white person.

2. A flatbread product which is usually unleavened.

3. A computer adept who is proficient at breaking software protection schemata such as keycodes, firewalls, copy protection, login scripts, etc. and incorrectly used synonymously with 'hacker' which is in actuality a different type of individual altogether.
The cracker works as a cracker and eats crackers.
by WillieD May 23, 2006