noun

1. A sudden, intense, loud sound, as made for example by cymbals.

   “After the lightning came the crash of thunder.”

2. An automobile, airplane, or other vehicle accident.

   “Nobody survived the plane crash”

3. A malfunction of computer software or hardware which causes it to shut down or become partially or totally inoperable.

   “My computer had a crash so I had to reboot it.”

Synonyms: abend

verb

1. To collide with something destructively, fall or come down violently.

2. To severely damage or destroy something by causing it to collide with something else.

   “I'm sorry for crashing the bike into a wall. I'll pay for repairs.”

3. (via gatecrash) To attend a social event without invitation, usually with unfavorable intentions.

   “We weren't invited to the party so we decided to crash it.”

adjective

1. Quick, fast, intensive, impromptu.

   “crash diet”