PCelt. *skiy-o- v. ‘cut’ < PIE. *sḱey- v. 'to cut' (IEW: 919f.)/OIr. scian [ā f] 'knife' (RM). "W ysgien is probably an Irish loanword corresponding to OIr. scían 'knife' (from PCelt. *skēno- < *sḱey-no-)" (RM) //// Lat. sacēna, scēna [f.] 'sacrificial axe' < secāre ‘to cut, sever’ < PItal. *sekaje/o- < PIE. *sekh₁-ie/o- v. 'to cut off'. "The noun s(a)cēna... is only attested in quotations by Festus and Paulus, and its form vacillates; still, the fact that it was borrowed into Celtic (OIr. scían 'knife') shows that it was alive during the Roman era. The solution put forward by Rosén 1994, viz. that s(a)cēna must be compared with Heb. śakkīn, Aram. sakkīn 'slaughtering-knife', is attractive. In Rosén's view, both words are probably borrowed from an unknown third source" (MDV). Ranko Matasović. "skiy-o-" in: Etymological Dictionary of Proto-Celtic. Indo-European Etymological Dictionaries Online. Edited by Alexander Lubotsky. Brill, 2014. Brill Online. October 2, 2014. < http://iedo.brillonline.nl/dictionaries/lemma.html?id=17167 >
Robert Farren, PIE culture words collection, 2017
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