The term 'SLEEK RACER' can be broken down into two words: 'SLEEK' and 'RACER'. The word 'LUGE' is a four-letter solution to this term. LUGE is a type of racing sport that involves a person lying on a small sled and navigating a course of ice or snow. It is a popular winter sport, and the goal is to achieve the fastest time possible. The term 'SLEEK RACER' can be used to describe someone who is an expert at LUGE racing, as they are able to navigate the course quickly and efficiently.