Definition of port-fire in English:

port-fire

Pronunciation /pôrtˈfī(ə)r/ /pɔrtˈfaɪ(ə)r/

noun

historical
  • A handheld fuse used for firing cannons, igniting explosives, etc.

Origin

Mid 17th century partial Anglicization of French porte-feu, from porter ‘carry’ + feu ‘fire’.