The term BULG. NEIGHBOR can be broken down into two crossword solutions: ALB (3 letters) and ROM (3 letters). ALB is the abbreviation for Albania, a small country located in southeastern Europe. It is bordered by Montenegro, Kosovo, North Macedonia, and Greece. ROM is the abbreviation for Romania, a country located in southeastern Europe. It is bordered by Hungary, Serbia, Ukraine, Moldova, and Bulgaria. Both Albania and Romania are neighbors of Bulgaria, hence the term BULG. NEIGHBOR.