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atoll

noun

1 atoll

An island consisting of a circular coral reef surrounding a lagoon.

Roget 346: island, isle, islet, eyot, ait, holf, reef, atoll, breaker; archipelago; islander.   

Dutch: atol
Polish: atol


Moby thesaurus: ait, archipelago, bar, cay, continental island, coral head, coral island, coral reef, holm, insularity, island, island group, islandology, isle, islet, key, oceanic island, reef, sandbank, sandbar.

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