Combo/ˈkɑːmbəʊ/ Definition 1 of 3Pro Tip 1/3Menu Deals Used often for food items bundled for a special price at eateries. The lunch combo includes a drink, and it's cheaper than buying items separately. Pro Tip 2/3Fast Food Common 'Combo' is frequently used in fast food restaurants to refer to set meals. Could I get a number 5 combo with onion rings instead of fries? Pro Tip 3/3Consumer Savings Implies a deal that saves the buyer money on popular items bundled together. I always look for the pizza combo deals to save a few bucks.