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