cracker

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A thin crisp wafer or biscuit, usually made of unsweetened dough.
2. n. One that cracks, especially:
3. n. A firecracker.
4. n. A small cardboard cylinder covered with decorative paper that holds candy or a party favor and pops when a paper strip is pulled at one or both ends and torn.
5. n. The apparatus used in the cracking of petroleum.
6. n. One who makes unauthorized use of a computer, especially to tamper with data or programs.
7. n. Offensive Used as a disparaging term for a poor white person of the rural, especially southeast United States.
8. n. Offensive Used as a disparaging term for a white person.

Century Dictionary and Cyclopedia

1. n. One who or that which cracks or breaks (transitively). Specifically— In flint-manuf., a man who breaks the flint stones into flakes, and sorts the fragments according to size.
2. n. One who or that which cracks (intransitively). Specifically— A small kind of firework filled with powder or combustible matter, which explodes with a smart crack or with a series of sharp noises in quick succession; a fire-cracker.
3. n. A boast; a lie.
4. n. A thin hard or crisp biscuit.
5. n. A bird, the pintail duck, Dafila acuta.
6. n. plural The parrots as an order, Enucleatores.
7. n. One of an inferior class of white hill-dwellers in some of the southern United States, especially in Georgia and Florida. The name is said to have been applied because cracked corn is their chief article of diet; it is as old in Georgia and Florida as the times of the revolution. Also called sand-hitter.

Wiktionary

1. n. A dry, thin, crispy, and usually salty or savory biscuit.
2. n. A short piece of twisted string tied to the end of a whip that creates the distinctive sound when the whip is thrown or cracked.
3. n. A firecracker.
4. n. A person or thing that cracks, or that cracks a thing (e.g. whip cracker; nutcracker).
5. n. A Christmas cracker
6. n. Refinery equipment used to pyrolyse organic feedstocks. If catalyst is used to aid pyrolysis it is informally called a cat-cracker
7. n. A fine thing or person (crackerjack).
8. n. One who maliciously cracks, (i.e. overcomes) computer software or security restrictions.
9. n. An impoverished white person from the SE United States, originally associated with Georgia and parts of Florida; or, (by extension) white people generally.

GNU Webster's 1913

1. n. One who, or that which, cracks.
2. n. A noisy boaster; a swaggering fellow.
3. n. A small firework, consisting of a little powder inclosed in a thick paper cylinder with a fuse, and exploding with a sharp noise; -- usually called firecracker.
4. n. A thin, dry biscuit, often hard or crisp.
5. n. A nickname to designate a poor white in some parts of the Southern United States.
6. n. The pintail duck.
7. n. A pair of fluted rolls for grinding caoutchouc.

WordNet 3.0

1. n. a thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet
2. n. a programmer who cracks (gains unauthorized access to) computers, typically to do malicious things
3. n. firework consisting of a small explosive charge and fuse in a heavy paper casing
4. n. a party favor consisting of a paper roll (usually containing candy or a small favor) that pops when pulled at both ends
5. n. a poor White person in the southern United States