Atoll

['ætɒl;ə'tɒl] or ['ætɔl]

(noun.) an island consisting of a circular coral reef surrounding a lagoon.

Typist: Toni--From WordNet

(n.) A coral island or islands, consisting of a belt of coral reef, partly submerged, surrounding a central lagoon or depression; a lagoon island.

Typed by Elbert

n. a coral island consisting of a circular belt of coral enclosing a central lagoon.

Typed by Katie

Checked by Ida