αἰγόφθαλμος
From LSJ
πολλὰ μεταξὺ πέλει κύλικος καὶ χείλεος ἄκρου → there is many a slip twixt cup and lip, there's many a slip twixt cup and lip, there's many a slip 'twixt cup and lip, there's many a slip twixt the cup and the lip, there's many a slip 'twixt the cup and the lip
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.