Durag
A close-fitting cloth tied over the head to hold waves and protect short hair.
Also: du-rag, doo-rag
A durag is a fitted cloth cap with long tails that tie at the back. It is worn over short hair, often after brushing, to press it flat and set the ripples of waves, and to protect braids, cornrows and locs at night. It developed in Black American communities in the 20th century and became a part of hip hop fashion. Some schools and sports leagues have restricted it, and others have since dropped those rules.