/ Dictionary / Index S settling tank: Meaning and Definition of Find definitions for: set'tling tank" Pronunciation: [key] a tank for holding liquid until particles suspended in it settle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. settling settlor Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language