The headword, dative singular of the adjective neoqhgh/s, is extracted from the quotation (but see note 1).
[1] Greek Anthology 7.181.3-4 (Andronicus): the dialect should be Doric, with the dative neoqh=gi from neoqh/c. On this epigram, an epitaph for one Damocrateia, see Page (10-11). Page notes (11) that it was a long-standing ancient tradition for women to cut their hair during a time of mourning. Paton (102-103) does translate si/dhros (iron, here in the dative singular) as "steel"; although steel was known to the Greeks from the time of Alexander, it was used exclusively in the form of Damascene steel for sword fabrication, not for hair-cutting instruments; cf. Ginzel (web address 1).