8 letters · 12 points in Scrabble
noun waterlines to show the level the water should reach when the ship is properly loaded
noun a light gym shoe with a rubber sole and a canvas top
originFrom Samuel Plimsoll, a Bristol merchant who created a system of marks and symbols for the waterline of ships. The shoe was possibly named because the line of its sole resembled the Plimsoll line of ship.
Etymology from Wiktionary, CC BY-SA 3.0