noun
A structure consisting of two large vertical stones supporting a third horizontal stone across the top, often found in ancient megalithic structures.
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The trilithon structure at Stonehenge is a remarkable example of ancient engineering.
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Have you seen those huge trilithon stones at Stonehenge? They're massive!
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Check out those badass trilithon rocks at Stonehenge!
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The trilithon symbolizes the enduring power of human ingenuity throughout the ages.