Term: Waterline Image: [{"name":"images\/public\/dictionary\/Waterline_9vm424tl.jpg","usrName":"Waterline.jpg","size":160442,"type":"image\/jpeg","thumbnail":"images\/public\/dictionary\/thWaterline_lbu7bz2e.jpg","thumbnail_type":"image\/jpeg","thumbnail_size":28116,"searchStr":"Waterline.jpg,!:sStrEnd"}] Definition: The intersection of the hull and the surface of the water.