either of two species of woody vines constituting the genus Menispermum of the family Menispermaceae. They occur in East Asia, eastern North ... Found on http://www.britannica.com/eb/a-z/m/118
Moon'seed` noun (Botany) A climbing plant of the genus Menispermum ; -- so called from the crescentlike form of the seeds. Found on http://www.encyclo.co.uk/webster/M/99