1911 Encyclopædia Britannica/Maenads

MAENADS (Gr. Μαινάδες, frenzied women), the female attendants of Dionysus. They are known by other names—Bacchae, Thyiades, Clodones and Mimallones (the last two probably of Thracian origin)—all more or less synonymous.

See the exhaustive articles by A. Legrand in Daremberg and Saglio’s Dictionnaire des antiquités and A. Rapp in Roscher’s Lexikon der Mythologie; also editions of Euripides, Bacchae (e.g. J. E. Sandys).