A brown-colored belt or sash awarded to a skilled practitioner in many of the martial arts, esp. in judo or karate, in which it is an award just below highest.
Webster's New World
Brown Belt Sentence Examples
Five-pocket jeans that come with a brown belt featuring silver detail.
Leopard spots tend to be quite popular on cocktail dresses; opt for a form-fitting sheath style or one cinched with a wide, dark brown belt to really play up your best features.
The weapons of the Franc Garde consisted usually of a pistol sidearm, carried in a brown leather holster attached to a brown belt worn over the blue jacket (which also had cargo pockets along the lower part of the jacket).