Gag, n.
  1. Something thrust into the mouth or throat to hinder speaking.
  2. A mouthful that makes one retch; a choking bit; as, a gag of mutton fat.
  3. A speech or phrase interpolated offhand by an actor on the stage in his part as written, usually consisting of some seasonable or local allusion. [Slang]
  Gag rein Harness, a rein for drawing the bit upward in the horse's mouth.
  Gag runner Harness, a loop on the throat latch guiding the gag rein.
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