What's the difference between i.e. and e.g.?
1690s, from French tourniquet "surgical tourniquet," also "turnstile," diminutive of torner "to turn," from Old French tourner, torner (see turn (v.)).
tourniquet tour·ni·quet (tur'nĭ-kĭt, tûr'-)n. A device, typically a tightly encircling bandage, used to check bleeding by temporarily stopping the flow of blood through a large artery in a limb.