°(nautical) the line formed by the surface of the water on the hull of a ship when she is afloat; any of a series of short lines marked on the hull to show where the waterline would be under different loadings.
°a line showing where the water has been, usually a line separating dry land and wet areas; a watermark or tidemark.
°(nautical) the line formed by the surface of the water on the hull of a ship when she is afloat; any of a series of short lines marked on the hull to show where the waterline would be under different loadings.
°a line showing where the water has been, usually a line separating dry land and wet areas; a watermark or tidemark.