relating to a balloon or other aircraft that flies because it weighs less than the air it displaces
aircraft supported by its own buoyancy
relating to an aircraft heavier than the air it displaces
a device for lighting or igniting fuel or charges or fires
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
the region above the ground
a distinctive but intangible quality surrounding a person or thing
a slight wind (usually refreshing)
expose to fresh air
the mass of air surrounding the Earth
