A Bosnian slang for "pal".
You use it when talking to a really close friend, or to describe someone who is friendly.
The word is of Turkish descent (yaran) which came from persian yârân (yâr-friend).
When you meet a friend:
OO what's up jarane. (OO DJES JARANE)
When talking about someone who is friendly:
Mujo is a jaran (Mujo je jaran)