Wiktionary
n. 1 (context rugby English) The act of pushing an opponent away with an open hand. 2 (context American football English) A pass made in a backward direction. 3 (context aviation English) The transfer of the radar identification of an aircraft from one controller to another when the aircraft enters the receiving controller's airspace and radio communications with the aircraft are transferred. 4 (context business English) The passing of a completed project to another person or group.
Wikipedia
In American football, a hand-off is the act of handing the ball directly from one player to another, i. e. without it leaving the first player's hands. Most rushing plays on offense begin with a handoff from the quarterback to another running back. The biggest risk with any handoff is the chance of fumble on the exchange. A handoff can occur in any direction. Sometimes called a "switch" in touch football. Alternately spelled without the hyphen; i.e., "handoff".
Usage examples of "hand-off".
We witnessed several smooth hand-offs of attack roles as Earth's rotation took some satellites out of line-of-sight of their targets.
In forty-five more days, USS Maine would surface outside Juan de Fuca Straits, link up with the tug boat, and follow Little Toot into Bangor, where she would then tie up and begin the hand-off process to the 'Blue' crew for the next deterrence-patrol cycle.