Definition of portfire
: a fuze or match for firing guns or fireworks: such as a : a paper case filled with a composition of niter, sulfur, and mealed powder b : a slow-burning fuze (as a billet of wood impregnated with potassium nitrate) or an incendiary cord or tube for igniting fuzes of blasting charges
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Origin and Etymology of portfire
partial translation of French porte-feu from porter to carry + feu fire — more at port
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