S: (n) crash, wreck (a serious accident (usually involving one or more vehicles)) "they are still investigating the crash of the TWA plane"
S: (n) crash, collapse (a sudden large decline of business or the prices of stocks (especially one that causes additional failures))
S: (n) crash, smash (the act of colliding with something) "his crash through the window"; "the fullback's smash into the defensive line"
S: (n) crash ((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"
Verb
S: (v) crash (fall or come down violently) "The branch crashed down on my car"; "The plane crashed in the sea"
S: (v) crash (move with, or as if with, a crashing noise) "The car crashed through the glass door"
S: (v) crash, ram (undergo damage or destruction on impact) "the plane crashed into the ocean"; "The car crashed into the lamp post"
S: (v) crash (move violently as through a barrier) "The terrorists crashed the gate"