noun
a person or thing that is the center of attention or admiration
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The newly built skyscraper became the cynosure of the city's skyline.
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Everyone couldn't stop talking about the cynosure of the party, the famous actor who showed up unexpectedly.
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That new car is the cynosure of the neighborhood, everyone is jealous of it.
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The bright star in the night sky served as a cynosure for the lost travelers.