Definition of waterline in English:

waterline

Syllabification: wa·ter·line
Pronunciation: /ˈwôdərˌlīn
 
, ˈwädərˌlīn
 
/

noun

1The level normally reached by the water on the side of a ship.
More example sentences
  • Yet they have the explosive ability to sink or badly damage even large vessels by blowing open their hull below the waterline.
  • Several models present divergent solutions to the same problem, for example the repair of hulls below the waterline.
  • It's that green stuff that marks the waterline of your boat.
1.1The level reached by the sea or a river visible as a line on a rock face, beach, or riverbank.
More example sentences
  • After checking another cage Greg pointed with his paddle to a dry waterline eight feet up one of the stumps.
  • We start in the library, the waterline there only a couple of feet high in a city where some houses were up their eaves in water.
  • The river, still carrying debris from recent rains, has dropped eight feet; I can see the old waterline on the trees.
1.2Any of a set of structural lines of a ship, parallel with the surface of the water, representing the contour of the hull at various heights above the keel and drawn on shipbuilding plans.
2A vertical watermark made in laid paper.

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Pronunciation: nēˈätn-ē
noun
retention of juvenile features in the adult animal