六合彩 Traditional form: 六合彩 Pinyin (reading): liùhécǎi Definitions: Mark Six (Hong Kong lotto game) Characters: 六 - six 合 - to combine, to join, to unite; to gather 彩 - color, hue; prize; brilliant; variegated Traditional characters: 六 - six 合 - to combine, to join, to unite; to gather 彩 - color, hue; prize; brilliant; variegated