Pronunciation: (âr'māl"),[key] —n. 1. the system, esp. a government postal system, of sending mail by airplane.
2. a letter, package, etc., sent by this system.
3. a stamp authorizing delivery of mail by this system.
—adj. of or pertaining to airmail.
—adv. by airmail: Send all overseas letters airmail.
—v.t. to send via airmail: I airmailed the package yesterday.Also,air'-mail".