bugarski

1. Bulgarian
   Bugarska granica je blizu Pirota. — The Bulgarian border is near Pirot.
   Leti idemo na bugarsko more. — In summer we go to the Bulgarian seaside.

2. Bulgarian; the Bulgarian language
   Bugarski je sličan srpskom, ali ima članove. — Bulgarian is similar to Serbian, but it has articles.

3. (with verbs of speaking) in Bulgarian
   Moja komšinica dobro govori bugarski. — My neighbour speaks Bulgarian well.

Written in lower case, unlike Bugarska — Bulgaria.