The crossword solution for the term 'Theme Park Part' is 'ROASTER', which is a seven-letter word. A ROASTER is a type of ride found in theme parks that consists of a large, circular platform that rotates around a central axis while riders are seated in cars that are attached to the platform. Roasters are usually designed to spin quickly and can reach speeds of up to 50 miles per hour. They are popular attractions at theme parks and provide an exciting experience for riders.