| 1. | a machine for driving piles, usually composed of a tall framework in which either a weight is raised and dropped on a pile head or in which a steam hammer drives the pile. |
| 2. | a person who operates such a machine. |
| 3. | a person who hits or attacks forcefully or powerfully. |
| 4. | Wrestling. a move whereby an opponent is turned upside down and slammed headfirst to the mat. |
| 5. | British Sports. a powerful stroke, hit, kick, etc. |
| pile driver n.
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