γενειαστήρ
From LSJ
ἆρά γε λόγον ἔχει δυοῖν ἀρχαῖν, ὑλικῆς τε καὶ δραστικῆς → does it in fact have the function of two principles, the material and the active?
English (LSJ)
ῆρος, ὁ,
A 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.