crash
     n 1: a loud resonant repeating noise; "he could hear the clang of
          distant bells" [syn: {clang}, {clangor}, {clangour}, {clangoring},
           {clank}, {clash}]
     2: a serious accident (usually involving one or more vehicles);
        "they are still investigating the crash of the TWA plane"
        [syn: {wreck}]
     3: a sudden large decline of business or the prices of stocks
        (especially one that causes additional failures) [syn: {collapse}]
     4: the act of colliding with something; "his crash through the
        window"; "the fullback's smash into the defensive line"
        [syn: {smash}]
     5: (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 1: fall or come down violently; "The branch crashed down on my
          car"; "The plane crashed in the sea"
     2: move with, or as if with, a crashing noise; "The car crashed
        through the glass door"
     3: undergo damage or destruction on impact; "the plane crashed
        into the ocean"; "The car crashed into the lamp post"
        [syn: {ram}]
     4: move violently as through a barrier; "The terrorists crashed
        the gate"
     5: break violently or noisily; smash; [syn: {break up}, {break
        apart}]
     6: occupy, usually uninvited; "My son's friends crashed our
        house last weekend"
     7: enter uninvited; informal; "let's crash the party!" [syn: {barge
        in}, {gate-crash}]
     8: cause to crash; "The terrorists crashed the car into the
        gate of the palace"
     9: hurl or thrust violently; "He dashed the plate against the
        wall"; "Waves were dashing against the rock" [syn: {dash}]
     10: undergo a sudden and severe downturn; "the economy crashed";
         "will the stock market crash again?"
     11: stop operating; "My computer crashed last night"; "The
         system goes down at least once a week" [syn: {go down}]
     12: sleep in a convenient place; "You can crash here, though
         it's not very comfortable" [syn: {doss}, {doss down}]
Source: WordNet® 2.0

crash 1. n. A sudden, usually drastic failure. Most often said of the
   {system} (q.v., sense 1), esp. of magnetic disk drives (the term
   originally described what happens when the air gap of a hard disk
   collapses). "Three {luser}s lost their files in last night's disk
   crash." A disk crash that involves the read/write heads dropping onto
   the surface of the disks and scraping off the oxide may also be referred
   to as a `head crash', whereas the term `system crash' usually, though
   not always, implies that the operating system or other software was at
   fault. 2. v. To fail suddenly. "Has the system just crashed?" "Something
   crashed the OS!" See {down}. Also used transitively to indicate the
   cause of the crash (usually a person or a program, or both). "Those
   idiots playing {SPACEWAR} crashed the system." 3. vi. Sometimes said of
   people hitting the sack after a long {hacking run}; see {gronk out}.


Source: The Jargon File