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.-a tool with an indented head for shaping the head of a rivet.-in pile driving, a block interposed between the head of the pile and the ram of the driver.-a small truck with a single wide roller used for moving heavy beams, columns, etc., in bridge building.-a compact, narrow-gauge locomotive used for moving construction trains, switching, etc.-a child's mane for a doll.