American English

Definition of atoll noun from the Oxford Advanced American Dictionary

 

atoll

 noun
noun
NAmE//ˈætɔl//
 
, NAmE//ˈætɑl//
 
 
jump to other results
an island made of coral and shaped like a ring with a lake of sea water (called alagoon) in the middle
See the Oxford Advanced Learner's Dictionary entry: atoll