1. a system of transporting mail by aircraft
2. mail that is transported by aircraft

1. to send mail by aircraft

Examples

• The letter was sent by airmail to arrive faster.
• Airmail service connects remote areas to the rest of the world.
• She received the airmail package from overseas.
• The company decided to airmail the urgent documents.
• Airmail stamps cost more than regular postage.
• He airmailed the contract to meet the deadline.
• The airmail envelope had distinctive red and blue borders.