瓶膽 Save Sign in to save words Simplified: 瓶胆 píngdǎn ㄆㄧㄥˊ ㄉㄢˇ the vacuum bottle within the outer case of a thermos Character by character 瓶(píng)bottle 膽(dǎn)gall bladder Other words read píngdǎn pingdan with other tones 平淡 憑單 平旦 Often confused with pingdan 拼單 A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0