Wildfire /(?)/

Wild·fire

Wildfire

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.
  2. An old name for erysipelas. (Med.)
  3. A sort of lightning unaccompanied by thunder. [R.]