Crossword Genius

Lagoon's boundary (5)

Ross

I believe the answer is:

atoll

'lagoon's boundary' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for atoll that I've seen before include "Bikini, say" , "Allot (anag.)" , "land threatened by rising sea levels" , "Coral island surrounding a lagoon" , "String of islands" .)

I've seen this clue in The Star Tribune, the Universal, the USA Today, the Family Time and the Penny Press.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.