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débâcle[débâcle 词源字典]

débâcle: [19] A débâcle is etymologically an ‘act of unbarring’, the notion behind it being that once a restraining bar is removed, a rush of disasters follows. It was borrowed at the start of the 19th century (originally in the technical geological sense of a ‘sudden violent surge of water in a river’) from French, where it was a derivative of débâcler, a verb formed from dé- ‘de-, un-’ and bâcler ‘bar’. This was acquired from Provençal baclar ‘bar a door’, which came from medieval Latin *bacculāre, a derivative of Latin bacculus ‘stick’ (responsible also for English bacillus and bacterium).
=> bacillus, bacterium[débâcle etymology, débâcle origin, 英语词源]