/ ˈkrækə(r); NAmE / noun
1.
a thin dry biscuit that is often salty and usually eaten with cheese
—see also cream cracker , graham cracker
2.
(also ˌChristmas ˈcracker ) a tube of coloured paper that makes a loud explosive sound when it is pulled open by two people. Crackers usually contain a paper hat, a small present and a joke, and are used in Britain at Christmas parties and meals :
Who wants to pull this cracker with me?
—see also firecracker
3.
( BrE , informal ) something that you think is very good, funny, etc. :
It was a cracker of a goal.
I've got a joke for you. It's a real cracker!
4.
( NAmE , slang ) an offensive word for a poor white person with little education from the southern US
5.
( informal ) a person who illegally finds a way of looking at or stealing information on sb else's computer system
6.
( old-fashioned , BrE , informal ) an attractive woman