A dolly is an unpowered vehicle designed for connection to a tractor unit, truck or prime mover vehicle with strong traction power. United States Classification by axle configuration There are several types of dolly bogie:

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Not who you're looking for? Others named dolly: 1975 studio album by Dolly Parton · female given name · Japanese band · portable anvil

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From Wikipedia (CC BY-SA 4.0).