The system of conveying mail using aircraft.
The items of mail so carried.
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.
A post system by means of transport relays of horses stationed at intervals along a route or network, carrying mail and passengers.
A dak bungalow.
To suddenly pull down someone's pants as a prank; to pants.