Definition of dolly

• n. - A contrivance, turning on a vertical axis by a handle or winch, and giving a circular motion to the ore to be washed; a stirrer.
• n. - A tool with an indented head for shaping the head of a rivet.
• n. - In pile driving, a block interposed between the head of the pile and the ram of the driver.
• n. - A small truck with a single wide roller used for moving heavy beams, columns, etc., in bridge building.
• n. - A compact, narrow-gauge locomotive used for moving construction trains, switching, etc.
• n. - A child's mane for a doll.