waterline /ˈwɑːtɚˌlaɪn/ noun plural waterlines
plural waterlines
Learner's definition of WATERLINE
1
the waterline : the level that water reaches on the side of a ship（船的）吃水线 2
[count] US : 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水迹线