The term 'Traffic Pylon' is a type of traffic control device used to direct and guide traffic. It is also known as a CONE, which is a four-letter word that can be used to solve the crossword. Traffic pylons are typically made of plastic or rubber and are used to separate lanes of traffic, mark hazardous areas, or provide guidance for drivers. They are often used in construction zones, parking lots, and other areas where traffic needs to be managed.