1. <chemical>

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.

2. <machinery> A tool with an indented head for shaping the head of a rivet.

3. In pile driving, a block interposed between the head of the pile and the ram of the driver.

4. A small truck with a single wide roller used for moving heavy beams, columns, etc, in bridge building.

5. A compact, narrow-gauge locomotive used for moving construction trains, switching, etc.

(01 Mar 1998)

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