Perfect prime rib. Stephen Walls / Getty Images. Prime rib is a classic roast beef preparation made from the beef rib primal cut, usually roasted with the bone in and served with its natural juices (au jus). Restaurants that serve prime rib are required to use beef that has been graded prime by the USDA.
The Fast Lane Answer. A ZIP Code is a group of five or nine numbers that are added to a postal address to assist the sorting of mail. A complete, 9-digit ZIP Code, including its additional four digits (called a ZIP+4 Code), is the designation of a delivery route.
noun 1 postcode a code of letters and digits added to a postal address to aid in the sorting of mail postal code zip code zipcode a coding system used for transmitting messages requiring brevity or secrecyostcode n 1 brit and austral a code of letters and digits used as part of a postal address to aid the sorting of mail also called postal code us equivalent zip code