Ἀρεθούσιος
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
Spanish (DGE)
-ου, ὁ Aretusio aten., D.53 passim. < Ἀρεθούσιος ἀρέθω > Ἀρεθούσιος, -ον
aretusio
1 ὕδωρ de la fuente Aretusa de Sicilia AP 9.362.18.
2 ét. de las ciudad Aretusa, St.Byz.s.u. Ἀρέθουσα.