CircePronunciation: /ˈsəːsi/ Greek MythologyDefinition of Circe an enchantress who lived on the island of Aeaea. When Odysseus visited the island his companions were changed into pigs by her potions, but he protected himself with the magic herb moly and forced her to restore his men to human form. Origin:via Latin from Greek KirkēCirce in other Oxford dictionaries Definition of Circe in the US English dictionary