Cockroach

Noun

 * 1)  A black or brown straight-winged insect of the order Blattodea, with about 3,500 species divided into six families. Only a few of these take up residence with human beings. Among these are Periplaneta americana (American cockroach or palmetto bug); Blattella germanica (German cockroach or Croton bug); and Blattella asahinai (Asian cockroach).
 * 2) Disparaging term for individuals or groups of people regarded as dirty, or who breed like cockroaches.

Synonyms

 * cocky
 * roach