摇头丸 Traditional form: 搖頭丸 Pinyin (reading): yáotóuwán Definitions: Ecstasy MDMA Characters: 摇 - to rock, to shake; to swing, to wave 头 - head; chief, boss; first, top 丸 - ball, pebble, pellet, pill Traditional characters: 搖 - to rock, to shake; to swing, to wave 頭 - head; chief, boss; first, top 丸 - ball, pebble, pellet, pill