What is (a) A thread or string for tying the blood vessels, particularly the arteries, to prevent hemorrhage. (b) A thread or wire used to remove tumors, etc called?

ligature — (Surg.) (a) A thread or string for tying the blood vessels, particularly the arteries, to prevent hemorrhage. (b) A thread or wire used to remove tumors, etc. (Webster's 1913.)

Sources