开心果 Traditional form: 開心果 Pinyin (reading): kāixīnguǒ Definitions: pistachio nuts fig. amusing person Characters: 开 - to open; to start, to initiate, to begin 心 - heart; mind; soul 果 - fruit, nut; result Traditional characters: 開 - to open; to start, to initiate, to begin 心 - heart; mind; soul 果 - fruit, nut; result