n. 1. A sudden, disastrous collapse, downfall, or defeat; a rout. 2. A total, often ludicrous failure. 3. The breaking up of ice in a river. 4. A violent flood. [French débâcle, from débâcler, to unbar, from Old French desbacler : des-, de- + bacler, to bar (from Vulgar Latin *bacculāre, from Latin baculum, rod; see bak- in the Appendix of Indo-European roots).] |
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