Whiplash /(?)/

Whip·lash

Whiplash

n.
  1. The lash of a whip, -- usually made of thongs of leather, or of cords, braided or twisted.
  2. a sudden change of direction, resembling the motion of the tip of a whip when it is cracked.
  3. a stinging psychological effect reminiscent of being stung by a whip.
  4. a whiplash injury.