For the purpose of this Article, the following words and phrases shall mean and include:
Helicopter. A rotary wing aircraft which depends principally for its support and motion in the air upon the lift generated by one or more power-driven rotors, rotating on substantially vertical axes. It can hover, fly backward and sideways, in addition to forward flight.
Heliport. An area, either at ground level or elevated on a structure, that is used for the landing and take-offs of helicopters, and includes some or all of the various facilities useful to helicopter operations.
Off-Heliport Landing Site. A take-off and landing area intended for temporary or occasional helicopter use but not formally designed as a heliport.
(Added by Ord. 392-73, App. 10/19/73)