/ Thesaurus / I Synonyms of iron mould Find synonyms for: Noun1. iron mold, iron mould, stain, discoloration, discolourationusage: a spot caused the staining with rust or inkWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language