obrtnik

1. Croat. craftsman; artisan
   Moj otac je obrtnik, ima stolarsku radionicu. — My father is a craftsman; he has a carpentry workshop.
2. Croat. sole trader; self-employed business owner
   Kao obrtnik plaća porez svaki mesec. — As a sole trader, he pays tax every month.

In Serbia the word is zanatlija, and for a sole trader preduzetnik.