To send mail by air.
To (unintentionally) throw the ball well over a fielder's head where that fielder is unable to make a play on the ball.
The items of mail so carried.
The system of conveying mail using aircraft.
To send or convey something from one person, place or thing to another.
To spread or pass on something such as a disease or a signal.
To communicate news or information.
To convey energy or force through a mechanism or medium.
To impart, convey or hand down something by inheritance or heredity.
To send out a signal (as opposed to receive).