gagger

noun4

1. •
   One who exhibits a gag reflex.

   • When it is known that the patient is a gagger, dentures should not be constructed or even impressions made until after several therapeutic hypnotic sessions. — 2016
2. •
   (slang) An actor or performer who relies on gags (quips).
3. •
   A piece of iron embedded in the sand of a mold to keep the sand in place.
4. •
   (slang, no longer used) A hoaxer; a deceiver.