(from Gr. νή, not, and πένθος, grief), is the name of a magic potion mentioned both by Greek and Roman poets, which was supposed to make persons forget their sorrows and misfortunes. It was the juice or infusion of a plant now unknown. Homer says it grew in Egypt, and that Helen learned its use from the Egyptians. According to Theodorus Siculus the Theban women also knew the secret of making it.