stunner

noun5

1. •
   (informal) Anything that is stunning.
2. •
   (informal) A woman or man of stunning beauty or handsomeness (often hyperbolic), a knockout.

   • She's a runner, rebel and a stunner / On her merry way sayin', "Baby, what you gonna—?" — 2006
3. •
   A pistol firing a beam capable of stunning an enemy.

   • March holstered his pistol, reached into his coat, and drew out his own neural stunner, shifting the weapon to his right hand. — 2018
4. •
   A person or machine that stuns an animal before slaughter.
5. •
   A professional wrestling maneuver in which an attacking wrestler applies a facelock to an opponent and falls to a seated position, forcing the opponent's jaw or neck to drop on the attacker's shoulder.