Etymology
Borrowed from Byzantine Greek ἐπιτραχήλιον (epitrakhḗlion), from Ancient Greek ἐπιτραχήλιος (epitrakhḗlios, “on the neck”) + -ιον (-ion, suffix forming diminutive nouns). ἐπιτραχήλιος (epitrakhḗlios) is from ἐπι- (epi-, “on, upon, on top of, covering”) (from Proto-Indo-European *h₁epi (“on; at; near”)) + τράχηλος (trákhēlos, “neck”) + -ῐος (-ĭos) (from Proto-Indo-European *-yós (suffix forming adjectives)).