scram

scram definitions

• A shutdown of a nuclear reactor (or, by extension, some other thing), often done rapidly due to an emergency. 

• The device used to shut down a nuclear reactor; also, the button or switch used to initiate a shutdown. 

• A scratch, especially caused by claws or fingernails. 

• To scratch (something) with claws or fingernails; to claw. 

• Of a nuclear reactor or some other thing: to shut down, usually because of an emergency. 

• To leave in a hurry; to go away. 

• To shut down (a nuclear reactor or, by extension, some other thing) for safety reasons, usually because of an emergency.