skene (n.) Look up skene at Dictionary.com
ancient type of Celtic dagger found in Ireland, double-edged and leaf-like, 1520s, from Irish Gaelic scian (genitive sceine) "knife," cognate with Gaelic sgian "knife," Welsh ysgien "a slicer," from PIE *skiy-ena-, from root *skei- "to divide, split" (see schizo-).