The term 'Turnpike-Toll Unit' refers to a device that is used to collect tolls on turnpikes. It is composed of an AXLE, which is a shaft or rod that connects two wheels or other rotating parts. The AXLE is usually made of metal and is used to transfer power from one wheel to another. The Turnpike-Toll Unit is typically placed at the entrance or exit of a turnpike and collects money from drivers as they pass through.