A cracker is a snack. It’s a thin, savory, crisp biscuit, like a saltine. It’s also anything that cracks, like a firecracker or a computer code cracker, or of course, that thin, savory snack that cracks when you break it.

Besides a baked wafer, another kind of cracker is a noisemaker — either a small firework that makes a sharp bang, or the kind that snaps loudly when you pull its colorful paper wrapper apart. Cracker can also be used as an offensive term for a white person, particularly one who's Southern and poor. This meaning comes from the sense of crack as "brag," and a cracker, therefore, as a "bragger."

Definitions of cracker
  1. noun
    a thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet
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    a cracker sprinkled with salt before baking
    soda cracker
    unsweetened cracker leavened slightly with soda and cream of tartar
    oyster cracker
    a small dry usually round cracker
    water biscuit
    a thin flour-and-water biscuit usually made without shortening; often served with cheese
    graham cracker
    semisweet whole-wheat cracker
    glazed and salted cracker typically in the shape of a loose knot
    soft pretzel
    a pretzel made of soft bread
    type of:
    bread, breadstuff, staff of life
    food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
  2. noun
    firework consisting of a small explosive charge and fuse in a heavy paper casing
    synonyms: banger, firecracker
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    cannon cracker
    a large firecracker
    cherry bomb
    a red ball-shaped firecracker with high explosive power
    whizbang, whizzbang
    a firecracker that (like the whizbang shell) makes a whizzing sound followed by a loud explosion
    type of:
    firework, pyrotechnic
    (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc.
  3. noun
    a party favor consisting of a paper roll (usually containing candy or a small favor) that pops when pulled at both ends
    synonyms: cracker bonbon, snapper
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    type of:
    favor, favour, party favor, party favour
    souvenir consisting of a small gift given to a guest at a party
  4. noun
    a programmer who cracks (gains unauthorized access to) computers, typically to do malicious things
    crackers are often mistakenly called hackers”
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    type of:
    coder, computer programmer, programmer, software engineer
    a person who designs and writes and tests computer programs
  5. noun
    a poor White person in the southern United States
    synonyms: redneck
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    type of:
    an unsophisticated country person
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