kitchen island
US /ˈkɪtʃ.ɪn ˌaɪ.lənd/
UK /ˈkɪtʃ.ɪn ˌaɪ.lənd/

1.
a freestanding counter in a kitchen, accessible from all sides, often used for food preparation, dining, or storage
:
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The new house has a spacious kitchen island with a built-in sink.
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We often eat breakfast at the kitchen island.