(n) the act of colliding with something; "his crash through the window"; "the fullback's smash into the defensive line"
(n) a serious accident (usually involving one or more vehicles); "they are still investigating the crash of the TWA plane"
(n) a loud resonant repeating noise; "he could hear the clang of distant bells"
(n) a sudden large decline of business or the prices of stocks (especially one that causes additional failures)
(n) (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"
(v) sleep in a convenient place; "You can crash here, though it's not very comfortable"
(v) stop operating; "My computer crashed last night"; "The system goes down at least once a week"
(v) undergo a sudden and severe downturn; "the economy crashed"; "will the stock market crash again?"
(v) hurl or thrust violently; "He dashed the plate against the wall"; "Waves were dashing against the rock"
(v) undergo damage or destruction on impact; "the plane crashed into the ocean"; "The car crashed into the lamp post"
(v) break violently or noisily; smash;
(v) cause to crash; "The terrorists crashed the car into the gate of the palace"
(v) fall or come down violently; "The branch crashed down on my car"; "The plane crashed in the sea"
(v) enter uninvited; informal; "let's crash the party!"
(v) move violently as through a barrier; "The terrorists crashed the gate"
(v) move with, or as if with, a crashing noise; "The car crashed through the glass door"
(v) occupy, usually uninvited; "My son's friends crashed our house last weekend"