γενειαστήρ
From LSJ
ἀλλ' εἰ μὲν ἁγνόν ἐστί σοι Πειθοῦς σέβας, γλώσσης ἐμῆς μείλιγμα καὶ θελκτήριον → but if you have holy reverence for Persuasion, the sweetness and charm of my tongue
English (LSJ)
ῆρος, ὁ, chin-strap of a bridle, Poll. 1.147.
Greek (Liddell-Scott)
γενειαστήρ: ὁ, ὁ περὶ τὰ γένεια ἱμάς, Πολυδ. Α΄, 147.
Spanish (DGE)
-ῆρος, ὁ
carrillera en la brida de los caballos, Poll.1.147, Hippiatr.Cant.93.20.