noun
a historical apparatus used to demonstrate the principles of steam power
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The aeolipile is a simple heat engine that uses steam to create rotational motion.
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Have you ever seen how an aeolipile works? It's pretty cool.
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Check out this funky little aeolipile thingamajig - it spins like magic!
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Her mind was like an aeolipile, constantly spinning with new ideas and thoughts.