Debacle

De‐ba″cle (?), n. [F. débâcle, fr. débâcler to unbar, break loose; pref. dé- (prob. = L. dis) + bâcler to bolt, fr. L. baculum a stick.] (Geol.) A breaking or bursting forth; a violent rush or flood of waters which breaks down opposing barriers, and hurls forward and disperses blocks of stone and other débris.