Definition of "Crash" :
noun: the act of colliding with something
"His crash through the window."
noun: a serious accident (usually involving one or more vehicles)
"They are still investigating the crash of the TWA plane."
noun: a loud resonant repeating noise
noun: a sudden large decline of business or the prices of stocks (especially one that causes additional failures)
noun: (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: sleep in a convenient place
"You can crash here, though it's not very comfortable."
verb: stop operating
"My computer crashed last night."
verb: undergo a sudden and severe downturn
"The economy crashed."
verb: hurl or thrust violently
verb: undergo damage or destruction on impact
"The plane crashed into the ocean."
verb: break violently or noisily; smash
verb: cause to crash
"The terrorists crashed the plane into the palace."
verb: fall or come down violently
"The branch crashed down on my car."
verb: enter uninvited; informal
"Let's crash the party!."
verb: move violently as through a barrier
"The terrorists crashed the gate."
verb: move with, or as if with, a crashing noise
"The car crashed through the glass door."
verb: make a sudden loud sound
"The waves crashed on the shore and kept us awake all night."
verb: occupy, usually uninvited
"My son's friends crashed our house last weekend."