Definitions
1.NounA drinking vessel intended or used for water."She asked the server to refill her water glass."
2.NounAny of various water-soluble silicate compounds, especially when occurring in dissolved, jelly-like form.
3.NounA water gauge for a steam boiler.
4.NounAn instrument consisting of an open box or tube with a glass bottom, used for examining objects in the water, as upon the sea bottom in shallow places.
5.NounA water clock.