The word RV refers to the words recreational vehicle. Recreational vehicles is a generic word that refers to all types of RVs including used travel trailers, used fifth wheels, used motorhomes, used class A diesel motorhomes, used class A gas motorhomes, used class B motorhomes, used class C motorhomes ( otherwise known as used mini motorhomes ), used fold down trailers and used sport utility campers ( A.K.A. used toyboxes or used toy haulers ). As you can see used RV is a very general term. RV dealers carry all types and brands.