Definition of waterline
: a line that marks the level of the surface of water on something: such asa (1) : the point on the hull of a ship or boat to which the water rises (2) : a line marked on the outside of a ship that corresponds with the water's surface when the ship is afloat on an even keel under specified conditions of loadingb : shoreline 1
Examples of waterline in a sentence
We repaired the hull below the waterline.
First Known Use of waterline
WATERLINE Defined for English Language Learners
Definition of waterline for English Language Learners
the waterline : the level that water reaches on the side of a ship
: a horizontal mark on a wall or other surface that was made by water during a flood and that shows how high the water was
WATERLINE Defined for Kids
Definition of waterline for Students
: any of several lines marked on the outside of a ship that match the surface of the water when the ship floats evenly
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