1. (noun)whiplash, whiplash injury an injury to the neck (the cervical vertebrae) resulting from rapid acceleration or deceleration (as in an automobile accident) Synonyms: whip, lash, whiplash, whiplash injury
2. (noun)whip, lash, whiplash a quick blow delivered with a whip or whiplike object Synonyms: whip, whiplash, cilium, eyelash, lash, thong, party whip, whiplash injury