move with, or as if with, a crashing noise "The car crashed through the glass door".
fall or come down violently "The branch crashed down on my car", "The plane crashed in the sea".(computer science) an event that causes a computer system to become inoperative "the crash occurred during a thunderstorm and the system has been down ever since".the act of colliding with something "his crash through the window", "the fullback's smash into the defensive line".a sudden large decline of business or the prices of stocks (especially one that causes additional failures).a serious accident (usually involving one or more vehicles) "they are still investigating the crash of the TWA plane".Synonyms: clang, clangor, clangoring, clangour, clank, clash. a loud resonant repeating noise "he could hear the clang of distant bells".