1. PCelt. *isarno-, *īsarno- ‘iron’. Proposed PIE etymologies include PIE *h₁ēsh₂r-no- > PCelt. *īsarno- 'bloody' > 'red' 'iron', cf. Hitt. eshar 'blood' and PIE *(H)ish₂ro- 'strong, holy, having supernatural powers' (Gr. hierós, Skt. iṣirá-). (RM). 2. PGm. *īsarna-, *īzarna- n. ‘iron’ <- PCelt. *īsarno- 'iron'. "A PGm. loanword from PCelt. *īsarno- 'iron', cf. OIr. íarn 'id.' It is uncertain whether *īsarno- belongs to the family of *aiza- 'ore' < *h₂ei-es-" (GK). Ranko Matasović. "isarno- / *īsarno-" in: Etymological Dictionary of Proto-Celtic. Indo-European Etymological Dictionaries Online. Edited by Alexander Lubotsky. Brill, 2014. Brill Online. November 28, 2014. < http://iedo.brillonline.nl/dictionaries/lemma.html?id=16561 >
Robert Farren, PIE culture words collection, 2017
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