I. ˈ ̷ ̷| ̷ ̷ noun
Etymology: air (III) + mail
1. : the system of transporting mail by aircraft
2. : mail transported or to be transported by air
3. : an airmail stamp
II. ˈ ̷ ̷ˌ ̷ ̷ adjective
: relating to, for use with, or intended for airmail
airmail service
airmail stamp
airmail letter
III. ˈ ̷ ̷| ̷ ̷ transitive verb
: to send by airmail