(n)an injury to the neck (the cervical vertebrae) resulting from rapid acceleration or deceleration (as in an automobile accident), Syn.whiplash injury
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. an injury to the neck caused by the sudden motion of the head backward and forward, as occurs to the occupants of a vehicle hit from behind by another vehicle. [ PJC ]