whiplash

/W IH1 P L AE0 SH/
noun
  1. 1

    The lash of a whip

  2. 2

    An injury to the upper spine connected to a violent jerk of the head in either a backward or forward or side to side direction, resembling the motion of a whip

verb
  1. 1

    To jerk back and forth; to buffet

  2. 2

    To lash as if with a whip

Source: https://en.wiktionary.org/wiki/whiplash