In these regulations—
Aerodrome means any definite and limited ground or water area intended to be used, either wholly or in part, for the landing or departure of aircraft
Aircraft includes all balloons, whether fixed or free, kites, gliders, airships, and flying-machines
Airship means an aircraft using gas lighter than air as a means of support, and having means of propulsion
Balloon means an aircraft, either fixed or free, using gas lighter than air as a means of support, and having no means of propulsion
Chief Medical Officer means the Chief Medical Officer of Rarotonga or the Chief Medical Officer of Niue, as the case may require
Flying-machine includes all aeroplanes, seaplanes, flying-boats, or other aircraft heavier than air, having means of propulsion
Glider means an aeroplane, or other free aircraft heavier than air, having no means of propulsion.