A pillow covering protecting the pillow from body oils. The pillowcase typically matches the sheet set.
bed linen consisting of a cover for a pillow; "the burglar carried his loot in a pillowcase"
an excellent cover for the gel ice packs
a removable pillow covering, usually made from cotton, flannel or jersey, that usually comes to match or coordinate sheet sets
A removable pillow covering. Pillowcases have no flange, and pillows are usually inserted through a side (not back) opening. PBteen standard pillowcases have an inside flap to hold pillows in place.