lavage

A washing, especially of a hollow organ, such as the stomach or lower bowel, with repeated injections of water.

An obsolete form of lavish.

A laving or washing; in medicine, the process of cleansing by injection of fluids; specifically, the washing out of the stomach, as in gastritis.

A washing.

A washing of a hollow organ.

To wash a hollow organ

washing out a hollow organ (especially the stomach) by flushing with water