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The Collaborative International Dictionary of English v.0.48 (gcide)

Cracker \Crack"er\ (kr[a^]k"[~e]r), n.
1. One who, or that which, cracks.
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2. A noisy boaster; a swaggering fellow. [Obs.]
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What cracker is this same that deafs our ears?
--Shak.
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3. 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}.
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4. A thin, dry biscuit, often hard or crisp; as, a Boston
cracker; a Graham cracker; a soda cracker; an oyster
cracker.
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5. A nickname to designate a poor white in some parts of the
Southern United States. --Bartlett.
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6. (Zool.) The pintail duck.
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7. pl. (Mach.) A pair of fluted rolls for grinding
caoutchouc. --Knight.
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firecracker \fire"crack`er\, n.
A small explosive device consisting of a paper or cardboard
cylinder having only sufficient explosive mixture to make a
loud bang, ignited by a short fuse, and used mostly as an
entertainment or in celebrations. Same as {Cracker}., n., 3.
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