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tlhIngan Hol for "water jug". In some households, it is traditional to keep a well-filled jug of water at the entrance of one's house, to quench the thirst of warriors when they return from battle. (STvideo game: Star Trek: Klingon)
tlhIngan Hol word which translates to "dirt under one's fingernails". However, it is also used metaphorically to mean "gall", "brazenness" or "chutzpah". Saying that somebody lacks butlh is a grave insult, suggesting that they live a very clean and comfortable life, which conflicts with the Klingon warrior ethos. (Klingon culturereference: The Klingon Way, The Klingon Hamlet)