What does the word gag mean?

Usage examples for gag

  1. He leaped into the saddle, as McBain cut the gag from the man's mouth. – The Law-Breakers by Ridgwell Cullum
  2. As they took the gag from his mouth and tied their handkerchiefs round his bleeding wrists, Jopp sobbed aloud. – Northern Lights by Gilbert Parker
  3. Would the gag prove effective? – His Unknown Wife by Louis Tracy