The term 'RAILROAD COACH' can be broken down into two words, 'RAILROAD' and 'COACH'. RAILROAD is a noun that refers to a system of tracks and associated equipment for the transportation of passengers and goods by rail. A COACH is a vehicle used for transporting passengers, typically with four wheels and an enclosed compartment. The crossword solution for this term is CAR, which is a motor vehicle with four wheels and an enclosed passenger compartment.