The term BAR BILL is a combination of two words. The first word, BAR, is a noun that refers to an establishment where alcoholic beverages are served. The second word, BILL, is a noun that refers to an invoice or statement of money owed for goods or services. Together, the term BAR BILL refers to the invoice or statement of money owed for goods or services purchased at a BAR. The crossword solution for this term is TAB, which is a noun that refers to a restaurant or BAR BILL.