CRACKER

n. 1 a paper cylinder both ends of which are pulled at Christmas etc. making a sharp noise and releasing a small toy etc. 2 a firework exploding with a sharp noise. 3 (usu. in pl.) an instrument for cracking (nutcrackers). 4 a thin dry biscuit often eaten with cheese. 5 sl. Brit. a notable or attractive person. 6 US a biscuit. 7 US offens. = poor White. cracker-barrel US (of philosophy etc.) homespun; unsophisticated.