Chignon
A low bun or knot at the nape of the neck, from the French for the nape.
A chignon is a bun worn low at the back of the head, near the nape. The word comes from the French chignon du cou, the nape of the neck. It can be a smooth coil, a loose knot or a twisted roll. Chignons appear in ancient Greek sculpture and have been a standard of formal dress in Europe for centuries, worn by brides, dancers and royalty. A chignon is often finished with flowers, a comb or a net.