ㄕㄡˇshǒuㄎㄡˇkǒuㄖㄨˊㄆㄧㄥˊpíng

  1. 瓶口一樣嚴緊比喻嚴守祕密演義·三五》:陛下守口如瓶不可提起。」緘口如瓶」。默不作聲默默無言緘口不言噤若寒蟬喋喋不休滔滔不絕吐露心腹口若懸河誇誇其談和盤托出盡情吐露

lit. to guard one's mouth like a closed bottle (idiom)​; tight-lipped, reticent, not breathing a word
(expr. idiom.)​ tenir sa langue, ne pas dire un mot, bouche cousue
Geheimhaltung (S)​