/ Thesaurus / P Synonyms of plimsoll mark Find synonyms for: Noun1. load line, Plimsoll line, Plimsoll mark, Plimsoll, waterline, water line, water levelusage: waterlines to show the level the water should reach when the ship is properly loadedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language