waterphone

Noun

 * 1) An acoustic percussion instrument consisting of a resonator bowl or pan with a cylindrical neck, surrounded by rods of different lengths and diameters. Water may be added to the bowl to modify the sound.
 * 2) An instrument for detecting leaks in pipes by their sound, consisting of a rod attached to an earpiece.
 * 1) An instrument for detecting leaks in pipes by their sound, consisting of a rod attached to an earpiece.