The level of the water table below ground.
Of a route that follows a riverbank or shoreline.
The waterline of a ship.
An instrument to show the level by means of the surface of water in a trough, or in upright tubes connected by a pipe.
The level of a body of water, especially when measured above a datum line.
A mark indicating the level to which water has risen.
A translucent design impressed on the surface of paper and visible when the paper is held to the light.
A logo superimposed on a digital image, a television broadcast, etc.
A value stored in a datafile to ensure its integrity, so that if the file's contents are changed then the watermark will no longer match the contents.
To mark paper with a watermark.
To mark a datafile with a digital watermark.