post

1. fast; fasting
   Moja baka strogo drži post pred Božić. — My grandmother strictly keeps the fast before Christmas.
   Uskršnji post traje sedam nedelja. — The Lenten fast lasts seven weeks.
2. (on the internet) post
   Njen post na Instagramu ima hiljadu lajkova. — Her Instagram post has a thousand likes.
   Pročitao sam tvoj post o putovanju. — I read your post about the trip.

To keep a fast is držati post or postiti; fasting food is posna hrana.