Cracker

One who, or that which, cracks.

A noisy boaster; a swaggering fellow.

A small firework, consisting of a little powder inclosed in a thick paper cylinder with a fuse, and exploding with a sharp noise; -- often called firecracker.

A thin, dry biscuit, often hard or crisp; as, a Boston cracker; a Graham cracker; a soda cracker; an oyster cracker.

A nickname to designate a poor white in some parts of the Southern United States.

The pintail duck.

A pair of fluted rolls for grinding caoutchouc.