gastroscope

from WordNet (r) 3.0 (2006)

gastroscope
    n 1: a type of endoscope for visually examining the stomach

from The Collaborative International Dictionary of English v.0.48

Gastroscope \Gas"tro*scope\, n. [Gastro- + -scope.] (Med.)
   An instrument for viewing or examining the interior of the
   stomach.
   [1913 Webster]