The portion of an enclosed area which contains air, especially breathable air.
that part of the sky designated for the sole use of aircraft.
The cavity in a cavity wall containing air for insulation.
Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.
A specified portion of the atmosphere, especially that under the technical aviation control and/or jurisdiction of a particular state over which territory (and territorial waters) it lies.
A single act of breathing in or out; a breathing of air.
The act or process of breathing.
Air expelled from the lungs.
A rest or pause.
A small amount of something, such as wind, or common sense.
voiceless, surd; contrasting with voice (breath sounds, voice sounds)