milk bar noun2 •(Australia) A convenience store.There′s another ATM at the newsagent, although Eftpos is possible at the milk bar and Maldon Pharmacy, both on Main St. — 2009 •A small shop or cafe, often part of a larger shop, that sells fast food and a range of dairy-based beverages such as milkshakes and ice creams; a deli or delicatessen. formsmilk bars