cracker
crack.er \'krak-*r\ n chiefly dial 1: a bragging liar : BOASTER 2: something that makes a cracking or snapping noise : as 2a: FIRECRACKER 2b: the snapping end of a whiplash : SNAPPER 2c: a paper holder for a party favor that pops when the ends are pulled sha rply pl 3: NUTCRACKER 4: a dry thin crisp bakery product made of flour and water South 5a: POOR WHITE - usu. used disparagingly cap 5b: a native or resident of Georgia or Florida - used as a nickname 6: the equipment in which cracking is carried out
Webster's English Dictionary