ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
subs.
See band. Frontlet for a horse: V. ἀμπυκτήρ, ὁ.