Examples from the Web for pillowcase
Only once did he stray far enough to buy his mother a pillowcase with “Winnipeg” on it.
I sent him during the day a piece of dark blue cotton print for a pillowcase.
The bricks were concealed beneath her bed, and the loose rubbish put into the pillowcase.Norfolk Annals|Charles Mackie
The pillowcase flapped aloud, ever more sternly, warningly, portentously.Yekl|Abraham Cahan
When Sylvia reappeared that noon she carried a pillowcase, which she held before her by its corners with care.The Opened Shutters|Clara Louise Burnham
If the insertion is used for anything but a pillowcase, omit the lower border on which the button-holes are made.Beeton's Book of Needlework|Isabella Beeton