Open English Wordnet
Nouns
(n)water table, water level, groundwater levelunderground surface below which the ground is wholly saturated with water“spring rains had raised the water table”
(n)waterline, water line, water levela line corresponding to the surface of the water when the vessel is afloat on an even keel; often painted on the hull of a ship
(n)water levela water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube