Search the dictionary A Chinese word or character, or English Search 8 entries. píngdǎn 瓶胆 the vacuum bottle within the outer case of a thermos píngdǎn 瓶膽 the vacuum bottle within the outer case of a thermos píngdàn 平淡 flat píngdān 凭单 voucher píngdān 憑單 voucher píngdàn 平旦 daybreak píngdànwúqí 平淡无奇 ordinary and mediocre (idiom) píngdànwúqí 平淡無奇 ordinary and mediocre (idiom)