Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.
that part of the sky designated for the sole use of aircraft.
The cavity in a cavity wall containing air for insulation.
The portion of an enclosed area which contains air, especially breathable air.
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 networking broadcast transmission.
A send off; a farewell celebration.
A shout out; an appreciative public mention of someone.
To issue, dispatch or transmit.