Common loanword for a pillow, used in everyday contexts such as bedding, travel, and product names.
飛行機でピローをもらいました。
I received a pillow on the plane.
このピローはとてもふわふわです
This pillow is very fluffy.
pillowcase
pillow money; tip for the room maid
pillow fight
Borrowed from English 'pillow'.