The following terms, wherever used or referred to in this article, shall have the meanings respectively ascribed to them in this section unless a different meaning clearly appears from the context:
(a) "Advertisement" means any writing, printing, picture, painting, display, emblem, drawing, sign or similar device intended to invite or to draw the attention of the public to any goods, merchandise, property, real or personal, business services, entertainment or amusement, manufactured, produced, bought, sold, conducted, furnished or dealt in by any person, which is posted, painted, tacked, nailed or otherwise displayed outdoors on real property, and includes any part of an advertisement recognizable as such.
(b) "Advertising sign" means any card, cloth, paper, metal, painted or wooden sign of any character, posted, stuck, glued, tacked, painted or otherwise fastened or affixed to or upon any fence, post, tree, wall or thing other than an advertising structure.
(c) "Advertising structure" means any structure erected for advertising purposes, with or without any advertisement displayed thereon, situated upon or attached to real property outdoors, upon which any poster, bill, printing, painting, device or other advertisement of any kind whatsoever may be placed, posted, painted, tacked, nailed or otherwise fastened, affixed or displayed.
(1967 Code §15-1)