What does tourniquet mean?
A tourniquet is a tightening device used chiefly in medicine to control severe bleeding from a limb. By compressing the limb's blood vessels, it can reduce or interrupt blood flow beyond the device, creating time for proper wound care. In emergencies, particularly in trauma and battlefield medicine, trained responders may apply a tourniquet proximal to the wound and leave it in place until the bleeding is otherwise controlled and medical help is available. The term can also denote a mechanical constrictor used to close a pipe or canal. Although often discussed in dramatic or lifesaving situations, tourniquet use is technical, and improvised substitutes or prolonged incorrect application can cause serious injury. Etymologically, the word comes through French from tourner, "to turn," reflecting the turning action of the tightening screw. The resulting word is a useful example of specialized vocabulary whose literal origin helps explain how the device works.
nounA device tightened around a limb to compress blood vessels and control severe bleeding. More generally, it can denote a mechanical constrictor used to regulate or stop the flow of a fluid through a pipe or channel.
- A device placed around a limb and tightened to compress blood vessels and stop or reduce severe bleeding.
- A mechanical device used to regulate or stop the flow of a fluid through a pipe, canal, or similar channel.
"The medic applied a tourniquet above the wound to control the bleeding until further treatment was available."
"The paramedic tightened the tourniquet above the patient's wound while another responder controlled the bleeding."
"During the flood, crews turned the canal's metal tourniquet to regulate the water flow."
The standard plural is tourniquets, including in emergency-response and medical writing.
"The rescue team carried two tourniquets in its trauma kit."
The word itself describes the mechanism: tourniquet comes through French from tourner, meaning "to turn."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of tourniquet
The English word was borrowed in the early 18th century from French tournequet, a diminutive form connected with tourner, "to turn." The name describes the device's screw mechanism, which is tightened by turning. Related English forms such as tour, tournament, and tourney ultimately trace to the same French and Latin verbal root associated with turning.
How tourniquet is actually used
The word is primarily technical, especially in medicine, emergency response, and military medicine. In figurative use, it can describe a severe restriction on movement or circulation, but that usage is less common.