Definition of "tourniquet"

tourniquet

/ˈtʊə.nɪ.keɪ/

noun
plural tourniquets
1. (medicine) A tightly-compressed bandage used to stop bleeding by stopping the flow of blood through a large artery in a limb.
  Quotations
  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; […].
  1907 August, Robert W[illiam] Chambers, chapter II, in The Younger Set, New York, N.Y.: D. Appleton & Company
  […] 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; […]
  1957, Jack Kerouac, On the Road, Viking Press
  After he was done, Lillehei's assistants released the tourniquet around Gregory's venae cavae, allowing blood to return.
  2018, Sandeep Jauhar, Heart: a History, page 83
2. Any of several similar methods of clamping components into position.
3. (obsolete) A turnstile.
verb
third-person singular simple present tourniquets, present participle tourniqueting, simple past and past participle tourniqueted
1. To apply a tourniquet bandage.