κυβιτίζω
From LSJ
ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
English (LSJ)
(κύβιτον) A nudge or poke with the elbow, Epich.213.
German (Pape)
[Seite 1523] mit dem Ellenbogen stoßen, παίειν ἀγκῶνι, Epicharm. in VLL.