coral
US /ˈkɔːr.əl/
UK /ˈkɔːr.əl/

1.
a hard stony substance, typically pink or red, formed by the skeletons of very small sea animals and found in warm seas. Coral is often used in jewelry.
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The diver admired the vibrant coral reef.
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She wore a necklace made of red coral.
1.
of a pinkish-orange color, like that of coral
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The sunset painted the sky in shades of coral and gold.
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She chose a beautiful coral dress for the party.