βρύκω
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English (LSJ)
or βρύχω [ῡ] (the former Att. acc. to Moer. and Ammon.; the distn. βρύκω
A bite, βρύχω gnash does not hold good), mostly pres.: fut. βρύξω Hp.Mul.1.2, Lyc.678: aor. ἔβρυξα Hp. Epid.5.86, Nic.Th.207, al., AP7.624 (Diod.), (ἐπ-) Archipp.35: aor. 2 ἔβρῠχε AP9.252 (late, perh. impf.): for βέβρῡχα, v. βρυχάομαι: —Pass., v. infr.:—eat greedily, gobble, γνάθος ἱππείη βρύκει champs the bit, Hom.Epigr.14.13; ἑφθὰ καὶ ὀπτὰ [κρέα] . . βρύκειν E. Cyc.358, cf. 372; πρὸς ταῦτα βρύκετ' Ar.Pax1315; bite, βρύκουσ' ἀπέδεσθαι . . τοὺς δακτύλους biting, Id.Av.26; of smoke, ὀδὰξ ἔβρυκε τὰς λήμας ἐμοῦ Id.Lys.301; later, simply, devour, consume, Nic.Al. 489, al.; βρύξας, of the sea, is perh. f.l. for βρόξας in AP7.624 (Diod.): metaph., tear in pieces, devour, of a gnawing disease, βρύκει S.Tr.987 (lyr.); βρύκει γὰρ ἅπαν τὸ παρόν Cratin.58; τὰ πατρῷα βρύκει Diph. 43.27:—Pass., ἀπόλωλα, τέκνον, βρύκομαι S.Ph.745; βρυχθεὶς ἁλί AP9.267 (Phil.). II gnash or grind the teeth, τοὺς ὀδόντας βρύχει Hp.Mul.1.7, etc., cf. AP15.51 (Arch.); τὸ στόμα β. Babr.95.45; β. τοὺς ὀδόντας ἐπί τινα Act.Ap.7.54; also βρύχει alone, Hp. Mul.2.120; also intr., οἱ ὀδόντες βρύχουσι ib.1.36; βρῦκον στόμα Nic. Al.226, cf. Th.207, al.:—Med., βρύχονται Hp.Morb.Sacr.1 (prob.).