\Wild"fire\, n.
1. A composition of inflammable materials, which, kindled, is
   very hard to quench; Greek fire.

         Brimstone, pitch, wildfire . . . burn cruelly, and
         hard to quench.                       --Bacon.

2. (Med.)
   (a) An old name for erysipelas.
   (b) A disease of sheep, attended with inflammation of the
       skin.

3. A sort of lightning unaccompanied by thunder. [R.]