What is the meaning of Stun?

To incapacitate; especially by inducing disorientation or unconsciousness.

To shock or surprise.

To hit the cue ball so that it slides without topspin or backspin (and with or without sidespin) and continues at a natural angle after contact with the object ball

To enter a stunned state.

The condition of being stunned.

That which stuns; a shock; a stupefying blow.

A person who lacks intelligence.

The effect on the cue ball where the ball is hit without topspin, backspin or sidespin.

A low-range setting for an energy weapon that will stun its target but not injure or kill it.

to stand

Source: wiktionary.org