fusilier (n.) Look up fusilier at Dictionary.com
1670s, "soldier armed with a musket," from French fusilier, from Old French fusil "musket," earlier "steel for a tinderbox," from Vulgar Latin *focilis (petra) "(stone) producing fire," from Latin focus "hearth," in Vulgar Latin "fire" (see focus (n.)). Retained by certain regiments of the British army that were formerly armed with fusils.