Definition of pyromachy in US English:

pyromachy

noun

rare
  • The use of fire in combat; an instance of this.

Origin

Late 16th century; earliest use found in Gabriel Harvey (c1552–1631), scholar and writer. From pyro- + -machy, after post-classical Latin pyromachia; compare Hellenistic Greek πυρομαχεῖν to contend with fire.