συνοφρύωμα
From LSJ
τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
English (LSJ)
ατος, τό,
A meeting of the eyebrows, Sch.Il.17.136, EM364.8.
Greek (Liddell-Scott)
συνοφρύωμα: τό, ἡ τῶν ὀφρύων συνάντησις ἢ ἕνωσις, Σχόλ. εἰς Ἰλ. Ρ. 136, Ἐτυμολ. Μέγ.