δακτυλιδιογλύφος

From LSJ

ἐπὶ ξυροῦ γὰρ ἀκμῆς ἔχεται ἡμῖν τὰ πρήγματα → our affairs are balanced on a razor's edge, our affairs are set upon the razor's edge

Source

Spanish (DGE)

-ου, ὁ grabador de anillos, Gloss.3.307, 513, cf. δακτυλιογλύφος.