The term 'boot accessory' can refer to a variety of items that are used to enhance the look and function of a boot. One such item is a SPUR, which is a four-letter word. Spurs are typically metal or plastic attachments that are affixed to the heel of a boot and have a row of sharp points that can be used to urge a horse forward. Spurs are often used in equestrian sports and activities, such as horseback riding, show jumping, and dressage.