Definition of German cockroach
: a small active winged cockroach (Blattella germanica) probably of African origin that is a common household pest in the United States —called also Croton bug
First Known Use of german cockroach
Medical Definition of German cockroach
: a small active winged cockroach of the genus Blattella (B. germanica) that is probably of African origin and is a common household pest in the United States—called also Croton bug
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