backhander

noun6

1. •
   A blow with the back of the hand; a blow delivered with a swing of the arm across the chest.

   • I thought he would have given me a backhander with his jelly spoon[.] — 1933
2. •
   (informal) A bribe, a secret payment.
3. •
   A shot played backhand, a backhand stroke.
4. •
   A player who plays a backhand shot.

   • She's a terrific backhander.
5. •
   A surfer who approaches a swell with the wave behind them ("on their backhand") rather than facing the wave ("on their forehand").

   • The morning brought an increased swell; long, perfect, down-the-line, 6-8' freight trains — a forehander's dream and a backhander's nightmare — 1990
6. •
   A glass of wine given out of turn, the bottle having been handed backwards.