The term 'COWBOY's Shoe' is a four-letter word that can be solved as 'BOOT'. A BOOT is a type of footwear that is typically made of leather and has a heel. It is designed to protect the foot and ankle from the elements and provide support for the wearer. COWBOY boots are a specific type of BOOT that is often associated with the American Old West. They are usually made of leather and have a higher heel than other types of boots, making them ideal for riding horses.