Whiplash Whip"lash`, n. 1. The lash of a whip, -- usually made of thongs of leather, or of cords, braided or twisted. [1913 Webster]

2. a sudden change of direction, resembling the motion of the tip of a whip when it is cracked. [PJC]

3. a stinging psychological effect reminiscent of being stung by a whip. [PJC]

4. a {whiplash injury}. [PJC]

The Collaborative International Dictionary of English. 2000.