何首乌 Traditional form: 何首烏 Pinyin (reading): héshǒuwū Definitions: Chinese knotweed (Polygonum multiflorum) fleeceflower root Characters: 何 - what, why, where, which, how 首 - chief, head, leader 乌 - crow, rook, raven; black, dark Traditional characters: 何 - what, why, where, which, how 首 - chief, head, leader 烏 - crow, rook, raven; black, dark