/ Dictionary / Index R red clay: Meaning and Definition of Find definitions for: red' clay' Pronunciation: [key] — Geol. Geol. a brown to red, widely distributed deep-sea deposit consisting chiefly of microscopic particles and tinted red by iron oxides and manganese. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. red chokeberry red clover Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language