Search Result for "atoll": 
Wordnet 3.0

NOUN (1)

1. an island consisting of a circular coral reef surrounding a lagoon;


The Collaborative International Dictionary of English v.0.48:

Atoll \A*toll"\, n. [The native name in the Indian Ocean.] A coral island or islands, consisting of a belt of coral reef, partly submerged, surrounding a central lagoon or depression; a lagoon island. [1913 Webster]
WordNet (r) 3.0 (2006):

atoll n 1: an island consisting of a circular coral reef surrounding a lagoon
Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "atoll": 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
The Free On-line Dictionary of Computing (18 March 2015):

Acceptance, Test Or Launch Language ATOLL (ATOLL) The language used for automating the checking and launch of Saturn rockets. ["SLCC ATOLL User's Manual", IBM 70-F11-0001, Huntsville AL Dec 1970]. (2000-04-03)