(of a vehicle) collide violently with an obstacle or another vehicle

a racing car had crashed, wrecking a safety barrier

the stolen car she was riding in crashed into a tree

move or cause to move with force, speed, and sudden loud noise

huge waves crashed down on to us

she crashed down the telephone receiver

(of shares, a business, etc.) suddenly drop in value or fail

the shares crashed to 329p

(of a computer, computing system, or software) fail suddenly

the project was postponed because the computer crashed

enter (a party) without an invitation; gatecrash

go to sleep, especially suddenly or in an improvised setting

what was it you said just before I crashed out?

a violent collision, typically of one vehicle with another or with an object

a car crash

a sudden loud noise as of something breaking or hitting another object

he slammed the phone down with a crash

a sudden disastrous drop in the value or price of something

the crash of 1987

a stock market crash

a sudden failure which puts a computer system out of action

system crashes are an everyday hazard

done rapidly or urgently and involving a concentrated effort

a crash course in Italian

with a sudden loud sound

crash went the bolt

a coarse plain linen, woollen, or cotton fabric