cracker

1. (obsolete) A noisy boaster; a swaggering fellow.Examples: "What cracker is this same that deafs our ears?"obsolete

2. (UK) A northern pintail, a dabbling duck of species Anas acuta.UK

3. A person or thing that breaks a thing (e.g., nutcracker).obsolete

4. A person or thing that breaks a thing (e.g., nutcracker).Examples: "It stated to one of the company's operators, “The Phantom, the system cracker, strikes again . . . Soon I will zero (expletive deleted) your desks and your backups on System A. I have already cracked your System B."; "Likewise, early software pirates and "crackers" often used phrases like "information wants to be free" to protest the regulations against the copying of proprietary software packages and computer systems."Synonyms: black hat, hacker

5. (slang, chiefly British, Ireland, Australia, New Zealand) A fine, great thing or person (crackerjack).Examples: "She's an absolute cracker!"; "The show was a cracker!"; "A cracker of a day."AustraliaBritishIrelandNew-Zealandslang

6. (US, derogatory, ethnic slur, offensive) An impoverished white person from the southeastern United States, originally associated with Georgia and parts of Florida; (by extension) any white person (slang).Examples: "Brothers and the whiteys / Blacks and the crackers / Police and their backers / They're all political actors"; "Check this shit: You got cracker farm boy Luke Skywalker, Nazi poster boy, blond hair, blue eyes. And then you got Darth Vader, the blackest brother in the galaxy, Nubian god!"; "“You know that old cracker beat them boys.”"Synonyms: corn-cracker, honky, peckerwood, redneck, trailer trash, white trash, whitey, wonderbreadUSderogatoryethnicoffensiveslur