/ Thesaurus Find synonyms for: Noun1. water line, watermark, lineusage: a line marking the level reached by a body of water2. watermark, marker, marking, markusage: a distinguishing mark impressed on paper during manufacture; visible when paper is held up to the lightWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: watermark (Dictionary) Related Content Daily Word Quiz: sublime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index