As used in this article, the following terms shall have the meanings indicated:
Any vehicle used, or so constructed as to permit its being used, as a conveyance upon the public streets or highways and duly licensable as such, and constructed in such manner as will permit occupancy thereof as a dwelling or sleeping place for one or more persons.
A plot of ground within a trailer court designated for the accommodation of one trailer coach.
An area upon which are designated six or more trailer coach spaces for public rental.