| Answer | Crossword Clue |
|---|---|
| waterwheel | a wheel made to rotate by direct action of water |
| waterwheels | WATERWHEEL, a wheel made to rotate by direct action of water |
| turbines | A machine for producing continuous power in which a wheel or rotor, typically fitted with vanes, is made to revolve by a fast-moving flow of water, steam, gas, air, or other fluid |
| pebbles | A small stone made smooth and round by the action of water or sand |
