atoll: Meaning and Definition of
at•oll
Pronunciation: (at'ôl, -ol, -ōl, u-tôl', u-tol', u-tōl'), [key] — n.
- a ring-shaped coral reef or a string of closely spaced small coral islands, enclosing or nearly enclosing a shallow lagoon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.