Definitions for "Arquebus"
A sort of hand gun or firearm a contrivance answering to a trigger, by which the burning match was applied. The musket was a later invention.
An improved hand-gun, either a match-lock or wheel-lock. (Davis, H.W. C. (ed.) Medieval England, 615) A matchlock firearm originally manufactured in Germany in the mid-fifteenth century (from hakenbÃ1/4sche). (Wise, Terence. Medieval Warfare, 246)
an obsolete firearm with a long barrel
A light form of handgun used by European infantries throughout the sixteenth and seventeenth centuries.