n. 1. One who, or that which, cracks. [ 1913 Webster ]
2. A noisy boaster; a swaggering fellow. [ Obs. ] [ 1913 Webster ]
What cracker is this same that deafs our ears? Shak. [ 1913 Webster ]
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. [ 1913 Webster ]
4. A thin, dry biscuit, often hard or crisp; as, a Boston cracker; a Graham cracker; a soda cracker; an oyster cracker. [ 1913 Webster ]
5. A nickname to designate a poor white in some parts of the Southern United States. Bartlett. [ 1913 Webster ]
6. (Zool.) The pintail duck. [ 1913 Webster ]
7. pl. (Mach.) A pair of fluted rolls for grinding caoutchouc. Knight. [ 1913 Webster ]