As used in this section, the following terms shall have the meanings indicated:
DECORATIVE FENCEA fence not exceeding a height of 36 inches from ground level, made of material other than wire, metal, chain or poured concrete, and constructed in a substantially open pattern (such as a weave or board-and-space pattern) and not solid pattern (such as a block, concrete, or privacy pattern).
FENCEAny enclosure or barrier, solid or otherwise, made of wood, iron, stone or other material, as around or along a yard, walkway, field, or other area, and shall include "decorative fence."
HEDGEA row of bushes or small trees planted close together which may form a barrier, enclosure or boundary.
PICKET FENCEA fence having a pointed post, stake, pale or peg placed vertically with the point or sharp part pointing upward to form a part of the fence.
RETAINING WALLA solid barrier of any material constructed to hold back a mass of earth. A retaining wall shall be considered a fence for purposes of this section.