/kok"rohch'/ , n.
any of numerous orthopterous insects of the family Blattidae, characterized by a flattened body, rapid movements, and nocturnal habits and including several common household pests. Also called roach . Cf. American cockroach, German cockroach, oriental cockroach .
[ 1615-25; cucaracha, of uncert. orig., assimilated by folk etym. to COCK 1 , ROACH 2 ]