'Pillowcase' definitions:

Definition of 'pillowcase'

From: WordNet
noun
Bed linen consisting of a cover for a pillow; "the burglar carried his loot in a pillowcase" [syn: case, pillowcase, slip, pillow slip]

Definition of 'Pillowcase'

From: GCIDE
  • Pillowcase \Pil"low*case`\, n. A removable case or covering for a pillow, usually of white linen or cotton cloth. [1913 Webster]