紫金牛 Traditional form: 紫金牛 Pinyin (reading): zǐjīnniú Definitions: Japanese ardisia (Ardisia japonica) Characters: 紫 - purple, violet; amethyst; surname 金 - gold, metal; money 牛 - ox, cow, bull Traditional characters: 紫 - purple, violet; amethyst; surname 金 - gold, metal; money 牛 - ox, cow, bull