crash

Concise Oxford English Dictionary © 2008 Oxford University Press:
crash1

▶verb

• 1 collide violently with an obstacle or another vehicle.

  ■ (of an aircraft) fall from the sky and violently hit the land or sea.

  ■ informal (of a company's shares) fall suddenly and disastrously in value.

  ■ Computing fail suddenly.

• 2 move with force, speed, and sudden loud noise.

  ■ make a sudden loud, deep noise.

• 3 (also crash out) informal fall deeply asleep.

• 4 informal gatecrash (a party).

• 5 chiefly N. Amer. (of a patient) suffer a cardiac arrest.

▶noun

• 1 an instance of crashing.

• 2 a sudden loud, discordant noise.

▶adjective done rapidly and involving a concentrated effort: a crash course in Italian.

– origin ME: imitative, perh. partly suggested by craze and dash.

Concise Oxford English Dictionary © 2008 Oxford University Press:
crash2

▶noun dated a coarse plain linen, woollen, or cotton fabric.

– origin C19: from Russ. krashenina ‘dyed coarse linen’.