§ 153.03 DEFINITIONS.
   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   AIRPORT. The Waseca Municipal Airport located in the east half of Section 14, Township 107 north, Range 23 West of the 5th Principal Meridian.
   AIRPORT ELEVATION. The established elevation of the highest point on the usable landing area which elevation is established to be 1,126 feet above mean sea level.
   AIRPORT HAZARD. Any structure or tree or use of land which obstructs the airspace required for, or is otherwise hazardous to, the flight of aircraft in landing or taking off at the airport; and any use of land which is hazardous to persons or property because of its proximity to the airport.
   DWELLING. Any building or portion thereof designed or used as a residence or sleeping place of one or more persons.
   HEIGHT. The purpose of determining the height limits in all zones set forth in this chapter and shown on the zoning map, the datum shall be mean sea level elevation unless otherwise specified.
   INSTRUMENT RUNWAY. A runway equipped or to be equipped with a precision electronic navigation aid or landing aid or other air navigation facilities suitable to permit the landing of aircraft by an instrument approach under restricted visibility conditions.
   LANDING AREA. The area of the airport used for the landing, taking off or taxing of aircraft.
   LANDING STRIP. Any grass or turf covered area of the airport specifically designated and used for the landing and/or take-off of aircraft. This term shall have the same meaning throughout this chapter as does the term “runway.”
   NONCONFORMING USE. Any pre-existing structure, tree, natural growth or use of land which is inconsistent with the provisions of this chapter or an amendment hereto.
   NON-INSTRUMENT RUNWAY. A runway other than an instrument runway.
   PERSON. An individual, firm, partnership, corporation, company, association, joint stock association or body politic, and includes a trustee, receiver, assignee, administrator, executor, guardian or other representative.
   RUNWAY. Any surface of the airport which is specifically designated and used for the landing and/or take-off of aircraft.
   SLOPE. An incline from the horizontal expressed in an arithmetic ratio or horizontal magnitude to vertical magnitude.
   STRUCTURE. An object constructed or installed by man, including, but without limitations buildings, towers, smokestacks and overhead transmission lines.
   TREE. Any object of natural growth.
   WATER SURFACES. The same meaning as land for the establishment of protected zones.
(`86 Code, § 12.03)