| Answer | Crossword Clue |
|---|---|
| MACHINE | Steam roller, for example. |
| VAPOR | Steam, for example |
| LOCOMOTIVE | Steam roller? |
| MOORE | "To a Steam Roller" poet |
| aeolipile | round vessel caused to rotate by the force of tangentially escaping steam: an early example of jet propulsion |
| eolipile | round vessel caused to rotate by the force of tangentially escaping steam: an early example of jet propulsion |
