bubašvaba

1. cockroach
   Sinoć sam video bubašvabu u kuhinji. — I saw a cockroach in the kitchen last night.
   Moramo da zovemo nekoga da otruje bubašvabe. — We need to call someone to get rid of the cockroaches.

In Croatia a cockroach is called "žohar"; in Serbia the usual word is "bubašvaba". The small reddish kind is often called "buba rus" in Serbia.