Englishfor English speakers
soffit
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noun
the underside of a part of a building (such as an arch or overhang or beam etc.)
cusp
Noun
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A cusp is a pointed end.
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A point on a tooth is a cusp.
The cusp on his back tooth had broken.
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The point on a crescent is a cusp.
They could see the cusp of the moon.
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When two curved lines meet, they create a cusp.
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A cusp is a point from which everything changes.
The scientist was at the cusp of a great discovery.