Γαγάτης
From LSJ
English (LSJ)
(sc. λίθος), ου, ὁ,
A lignite, Orph.L.474, Plin.HN36.141, Dsc.5.128, Gal.12.203, Gp.15.1.32. 2 jet, Solin.22.11. II = ἀστράγαλος, cj. in Ps.-Dsc.4.61. (From Γάγας or Γάγγαι, a town and river in Lycia.)
Greek (Liddell-Scott)
Γᾰγάτης: -ου, ὁ, gag ãtes, ὀρυκτὸν σκληρότατον καὶ μέλαν, Ὀρφ. Λ. 468, Διοσκ. 5.146· οὕτω καλούμενον ἐκ τοῦ ὀνόματος Γάγας ἢ Γάγγαι, πόλεως καὶ ποταμοῦ ἐν Λυκίᾳ.