tourniquet

noun

device which applies pressure to a limb or extremity in order to constrict blood flow in veins

Pronunciation: /ˈtʊə.nɪ.keɪ/ / /ˈtɔː.nɪ.keɪ/ / /ˈtɝ.nɪ.kɪt/

Etymology: From French tourniquet, from tourner (“to turn”).

A tightly-compressed bandage used to stop bleeding by stopping the flow of blood through a large artery in a limb.
“His forefathers had been, as a rule, professional men—physicians and lawyers; his grandfather died under the walls of Chapultepec Castle while twisting a tourniquet for a cursing dragoon; an uncle remained indefinitely at Malvern Hill;[…].”
“[…] Bull was in the bathroom taking his fix, clutching his old black necktie in his teeth for a tourniquet and jabbing with the needle into his woesome arm with the thousand holes;[…]”
Any of several similar methods of clamping components into position.
A turnstile.

Etymology: From French tourniquet, from tourner (“to turn”).