As used in this article, the following terms shall have the meanings indicated:
Any building which houses a legal nonconforming use, and/or a nonconforming building which, at the time such building was first utilized, was in conformance with the building area, structural and dimensional standards then in effect in the Village of Atlantic Beach.
Any nonconforming use which, at the time such use was commenced, was maintainable as a matter of right under the statutes, ordinances and general rules of law then in effect in the Village of Atlantic Beach.
Any building or structure which does not conform the building area, structural or dimensional standards then in effect in the Village of Atlantic Beach.
The use of any land or building which does not conform to the use restrictions of this chapter for the zoning district in which it is maintained.