/ Dictionary / Index S sludgeworm: Meaning and Definition of Find definitions for: sludge•worm Pronunciation: (sluj'wûrm"), [key] — n. a small freshwater worm, Tubifex tubifex, often inhabiting sewage sludge and the muddy bottoms of lakes, rivers, and pools. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sludge sludging Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language