(informal) To fail utterly.

(informal, emergency medicine) A portable set of trays, drawers and shelves containing equipment and medication used in a medical emergency

(computing) A collision of the head of a hard drive with the platter, resulting in permanent damage to the hard drive.

(very rare) Alternative form of gatecrash

(idiomatic) A quick, intense course of learning, especially one which is informal or hurried.

The landing of an aircraft or spacecraft in an emergency, either in an inappropriate place or under dangerous circumstances, usually with damage to the aircraft.

Alternative spelling of crash landing

To land an aircraft or spacecraft in an emergency, either in an inappropriate place or under dangerous conditions; usually results in damage to the craft and the possibility of loss of life.

Alternative spelling of crash land

Any place used for temporary lodging, especially without payment or permission. / (aviation) A place of temporary lodging for airline flight crews.