The lash of a whip. / 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.

To jerk back and forth; to buffet. / To lash as if with a whip.

plural of whiplash

simple past tense and past participle of whiplash

present participle of whiplash

(informal, sometimes figuratively) Reminiscent of a whiplash injury; involving a rapid back-and-forth jerking motion.