1) Arthropod genus 2) Genus blattella 3) Small cockroaches 
A genus of cockroaches, (family Blattidae) that includes Blattella germanica, the German cockroach or croton bug, probably the most familiar and widespread of the cockroaches. ... Origin: L. Blatta, cockroach ... (05 Mar 2000) ... 
Type: Term Pronunciation: bla-tel′ă Definitions: 1. A genus of cockroaches, (family Blattidae) that includes Blattella germanica, the German cockroach or croton bug, probably the most familiar and widespread of the cockroaches.
[n] - small cockroaches
blattella Small cockroaches.
genus Blattella noun small cockroaches