αἰγόφθαλμος
From LSJ
τί δὲ βλέπεις τὸ κάρφος τὸ ἐν τῷ ὀφθαλμῷ τοῦ ἀδελφοῦ σου, τὴν δὲ ἐν τῷ σῷ ὀφθαλμῷ δοκὸν οὐ κατανοεῖς → why do you look at the speck of sawdust in your brother's eye and pay no attention to the plank in your own eye | and why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye | why do you see the speck that is in your brother's eye, but don't consider the beam that is in your own eye
English (LSJ)
ὁ, A goat's-eye, a precious stone, Plin.HN37.187.
Greek (Liddell-Scott)
αἰγόφθαλμος: ὁ, = αἰγὸς ὀφθαλμός, εἶδος πολυτίμου λίθου, Πλίν. 37. 72.
Spanish (DGE)
-ον
1 de ojos de cabra Heph.Astr.3.45.9, Epit.2.2.25.58.
2 subst. ojo de cabra cierta piedra preciosa, Plin.HN 37.187, Isid.Etym.16.15.20.