γναθόω
From LSJ
μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
English (LSJ)
hit on the cheek, Phryn.Com.28.
Spanish (DGE)
(γνᾰθόω) golpear en la mandíbula Phryn.Com.29.
Greek (Liddell-Scott)
γνᾰθόω: τύπτω τὴν παρειάν, ῥαπίζω, Φρύν. Κωμ. Μον. 9.
German (Pape)
einen Backenstreich geben, Phryn. com. in B.A. 87.