samoposluga

1. grocery store; self-service shop
   Svratiću u samoposlugu po hleb i mleko. — I'll stop by the grocery store for bread and milk.
   Samoposluga na uglu radi do ponoći. — The grocery store on the corner is open until midnight.

Usually refers to a small neighbourhood grocery shop; a large store is more often called «supermarket» or «hipermarket».