The term FRIES' PARTNER is referring to the classic fast food combination of a hamburger and french fries. The crossword solution for this term is BURGER, which is a 6 letter word. A hamburger, also known as a BURGER, is a sandwich consisting of one or more cooked patties of ground meat, usually beef, placed inside a sliced bread roll or bun. French fries, also known as chips, are thin strips of potato that have been deep fried or baked. This classic combination of a hamburger and french fries is often referred to as FRIES' PARTNER.