As used in this article, the following terms shall have the meanings indicated:
Any site, lot, field or tract of ground upon which five or more trailer coaches are placed, except for sale, and shall include any building, tent, vehicle or enclosure used or intended to be used as part of the equipment of such park.
A lot or plot of ground in any coach park of definite size and clearly indicated by the corner markers which shall be assigned to one trailer coach or tow car.
Any vehicle designed for use or capable of being used as a dwelling or sleeping quarters for one or more persons, whether propelled by its own power or the power of another vehicle to which it may be attached.