STUN

noun

1. The condition of being stunned.
2. That which stuns; a shock; a stupefying blow.
3. A person who lacks intelligence.

verb

1. To incapacitate; especially by inducing disorientation or unconsciousness.
2. To shock or surprise.
3. 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