A thin tube which is passed into the stomach through either the nose or mouth, used to pump out the contents of the stomach or to introduce a barium meal in the stomach [Described 1921. After John Alfred Ryle (1882-1950), physician at London, Cambridge and Oxford, UK.]
A slightly weighted rubber tube that is inserted through the mouth and esophagus into the stomach for the purpose of extracting samples of its contents or administering a fractional test meal.
A slender rubber tube that is inserted into the stomach for the purpose of administering a test meal.