CLEONÆ, in Ancient Geography, a town of Argolis, above Mycenæ, on the road which leads from Argos to Corinth; standing on an eminence, on every side occupied by houses. In the forest near this town was slain by Hercules the huge lion (Sil. Italicus, Seneca). Cleonæus the epithet. Cleonæum Sidus, the lion.—Another Cleonæ on Mount Athos in Chalcidice.