Bun (hairstyle)
A bun is a type of hairstyle wherein the hair is pulled back from the face, twisted or plaited, and wrapped in a circular coil around itself, typically on the back of the head or neck. A bun can be secured with a barrette, bobby pins, a hair stick, a hairnet, and/or a pencil, and hair may be wrapped around a piece called a "rat". Buns may be tightly gathered, or loose and more informal.