'atoll' definitions:
Definition of 'atoll'
(from WordNet)
noun
An island consisting of a circular coral reef surrounding a lagoon
Synonyms of 'atoll'
From: 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