Prefrosh

Someone who is younger than a frosh (first year student). There is debate over what point one transitions from a frosh to a prefrosh, but this author believes that one is a prefrosh until he or she is registered for a class at MIT. Prefrosh come to visit MIT throughout the year (most commonly during CPW though) and stay with an MIT student. Most Slugs love having prefrosh and enjoy showing them the amazingness of MIT.