As used in this chapter, the following definitions shall be applicable unless the context clearly indicates some other meaning:
Any vehicle or similar portable structure constructed so as to permit its being used as a conveyance on a public street and so as to permit the occupancy thereof by one or more persons as sleeping quarters or as residence quarters, whether movable under its power or towed by another vehicle.
An area of land on which two or more occupied trailer coaches are harbored, either free of charge or for revenue, together with any building, structure or enclosure used as part of the equipment of such park.