Bun
Hair twisted or coiled into a round knot on the head, at the crown, the back or the nape.
Also: knot, topknot, jooda
A bun is made by gathering the hair, often into a ponytail first, then twisting or coiling it around itself into a round knot and pinning it. A topknot sits on the top of the head, a chignon at the nape, a ballet bun tight and smooth at the crown, a messy bun loose and quick. Buns are among the oldest and most widespread hairstyles, from the jooda of South Asia to the samurai topknot and the Sikh joora.