petronel
noun
pet·ro·nel ˌpe-trə-ˈnel 
: a portable firearm resembling a carbine of large caliber
Word History
Etymology
perhaps modification of Middle French poitrinal, petrinal, from poitrinal of the chest, from poitrine chest, ultimately from Latin pector-, pectus — more at pectoral
First Known Use
circa 1577, in the meaning defined above