The term 'Sock Cover' can be solved by the four-letter word 'SHOE'. A sock cover is an item of clothing that is worn over socks to protect them from dirt and wear. It is usually made of a durable material such as leather or rubber, and is designed to fit snugly over the foot and ankle. Sock covers are often used in sports, such as football and basketball, to provide extra protection for the feet. They can also be used in everyday life to keep feet warm and dry.