Definition of crashes:
(n) :
A sudden, intense, loud sound, as made for example by cymbals.
(n) :
An automobile, airplane, or other vehicle accident.
(n) :
(computing) A malfunction of computer software or hardware which causes it to shut down or become partially or totally inoperable.
(n) :
(finance) A sudden large decline of business or the prices of stocks (especially one that causes additional failures).
(n) :
(informal) A comedown from a drug.
(n) :
(collective) A group of rhinoceroses.