(n.) A case of strong paper filled with a composition of niter, sulphur, and mealed powder, -- used principally to ignite the priming in proving guns, and as an incendiary material in shells.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). portfire. Retrieved September 20, 2026, from http://smartdefine.org/portfire/definitions/2047664 |
| Chicago | Webster's. 2011. "portfire" http://smartdefine.org/portfire/definitions/2047664 (accessed September 20, 2026). |
| Harvard | Webster's 2011, portfire, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/portfire/definitions/2047664>. |
| MLA | Webster's. "portfire" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/portfire/definitions/2047664> |