/ Dictionary / Index P pillowcase: Meaning and Definition of Find definitions for: pil•low•case Pronunciation: (pil'ō-kās"), [key] — n. a removable sacklike covering, usually of cotton, drawn over a pillow. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pillowcase (Thesaurus) pillow block pillow lace Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language