Answer: tourniquet

AnswerCrossword Clue
TOURNIQUETA medic might tie one on
TOURNIQUETMore severe
TOURNIQUETAmbulance bandage
TOURNIQUETHemorrhage-stopping device
TOURNIQUETTwisty bandage
TOURNIQUETFirst-aid item.
tourniquet(French) a device to stop bleeding, as a bandage twisted tight by a stick, etc
tourniquetA device for stopping the flow of blood through an artery, typically by compressing a limb with a cord or tight bandage