φραστήρ
From LSJ
ἤκουσεν ἐν Ῥώμῃ καὶ ἀρσένων ἑταιρίαν εἶναι → he heard that there was also a fellowship of males in Rome (Severius, commentary on Romans 1:27)
English (LSJ)
ῆρος, ὁ,
A teller, expounder, τινος of or about a thing, X.Cyr.4.5.17; ὁδῶν φ. guide, ib.5.4.40, cf. Ph.2.77, Plu.2.243e: φ. ὀδόντες, = γνώμονες, the teeth that tell the age, Sch.Ar.Ra.421.