- the system, especially a government postal system, of sending mail by airplane.
- a letter, package, etc., sent by this system.
- a stamp authorizing delivery of mail by this system.
- of or relating to airmail.
- by airmail: Send all overseas letters airmail.
verb (used with object)
- to send via airmail: I airmailed the package yesterday.
- the system of conveying mail by aircraft
- mail conveyed by aircraft
- of, used for, or concerned with airmail
- (tr) to send by airmail