snickersnee
noun
snick·er·snee ˈsni-kər-ˌsnē 
ˈsni-kə-ˌsnē
: a large knife
Word History
Etymology
obsolete snick or snee to engage in cut-and-thrust fighting, alteration of earlier steake or snye, from Dutch steken of snijden to thrust or cut
First Known Use
circa 1775, in the meaning defined above