定心丸 dìng xīn wán 🔊 tranquilizer HSK 7–9 + Review this word Meanings dìng xīn wán tranquilizersth that sets one's mind at ease Its characters 定dìngto fix; to set; to make definiteHSK 4心xīnheartHSK 4丸wánballHSK 7–9