Etymology: Spanish cucaracha, woodlouse
- (zoology) 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 (a), Periplaneta americana (American cockroach or palmetto bug; (b), Blattella germanica (German cockroach or Croton bug; and (c), Blattella asahinai, (Asian cockroach).
- Disparaging term for individuals or groups of people regarded as dirty, or who breed like cockroaches.
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Full Definition of cockroach