/ Dictionary / Index S silt: Meaning and Definition of Find definitions for: silt Pronunciation: (silt), [key] — n. earthy matter, fine sand, or the like carried by moving or running water and deposited as a sediment. —v.i. to become filled or choked up with silt. —v.t. to fill or choke up with silt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: silt (Thesaurus) siloxane siltstone Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language