One means of communication (7)
I believe the answer is:
airmail
(Other definitions for airmail that I've seen before include "Quick way to deliver" , "Speedy deliveries" , "Letters taken by plane" , "Postal system f" , "Flying post?" .)
I believe the answer is:
airmail
(Other definitions for airmail that I've seen before include "Quick way to deliver" , "Speedy deliveries" , "Letters taken by plane" , "Postal system f" , "Flying post?" .)