/ Dictionary / Index S shale: Meaning and Definition of Find definitions for: shale Pronunciation: (shāl), [key] — n. a rock of fissile or laminated structure formed by the consolidation of clay or argillaceous material. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: shale (Thesaurus) shalach manoth* shale oil Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language