water line

water line or wa·ter·line (wôtr-ln, wtr-)

n.

1.

a. The line on the hull of a ship to which the surface of the water rises.

b. Any of several lines parallel to this line, marked on the hull of a ship, and indicating the depth to which the ship sinks under various loads.

2. A line or stain, as one left on a seawall, indicating the height to which water has risen or may rise; a watermark.

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water line

n

1. (Transport / Nautical Terms) a line marked at the level around a vessel's hull to which the vessel will be immersed when afloat

2. a line marking the level reached by a body of water

Thesaurus

Noun	1.	water line - a 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 waterline, water level line - a spatial location defined by a real or imaginary unidimensional extent load line, Plimsoll, Plimsoll line, Plimsoll mark - waterlines to show the level the water should reach when the ship is properly loaded
	2.	water line - a line marking the level reached by a body of water watermark line - a spatial location defined by a real or imaginary unidimensional extent high-water mark - a line marking the highest level reached low-water mark - a line marking the lowest level reached