Usually a place where a group gathers in order to get the evening started. Most times "Starter-Bars" are located in the suburbs. After a few drinks and appetizers the group moves on to other places for good entertainment.
Person 1: Dude are you gunna meet us at the "Starter-Bar" after work tonight?
Person 2: Yeah dude, and after that we all should go down town to see that new band we've been talking about.