/ Thesaurus / R Synonyms of red silk cotton Find synonyms for: Noun1. red silk cotton, plant fiber, plant fibreusage: a plant fiber from the red silk-cotton tree of eastern India; inferior to kapokWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language