English translation (word)
English translation (etymon)
κόμη παρὰ τὸ κείρω, κόρη, τροπῇ τοῦ ρ εἰς μ, κόμη · ἢ παρὰ τὸ κόσμον αὐτὴν εἶναι τοῦ σώματος
komē “hair” is from keirō “to cut”, ‹hence› *korē “cutting”, and by changing the [r] into [m], komē. Or because it is the kosmos “ornament” of the body
*korē "cutting" is a ghost-word invented for the sake of the etymological explanation. The etymology relies on the regular vowel alternation e ~ o (seen for instance in λέγω ~ λόγος) plus a "change" of a consonant. Semantically, it implies that hair differs from body hair in that it has to be cut regularly.
Etymologicum Magnum 790.