The crossword solution for the term 'Cartwheel Connection' is 'AXLE'. An AXLE is a central shaft for a rotating wheel or gear. It is usually made of metal and is used to connect two or more wheels together. Axles are commonly found in vehicles, such as cars, trucks, and buses, and are also used in machinery, such as conveyor belts and elevators. In the context of a cartwheel, an AXLE is used to connect the wheel to the frame of the cart, allowing it to rotate freely.