Crossword Genius

Key rings? (6)

Ross

I believe the answer is:

atolls

'key rings?' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for atolls that I've seen before include "Ring-shaped coral reefs enclosing lagoons" , "Coral reef islands" , "Ring-shaped coral islands" .)

I've seen this clue in The Wall Street Journal.
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