Crossword Genius

Reef material (5)


I believe the answer is:


'reef material' is the definition.
(material making up a coral reef)

This is all the clue.

(Other definitions for coral that I've seen before include "Basis of reefs" , "Tiny animal forming reef" , "Marine substance, often forming reefs" , "Basic material of South Sea islands" , "Hard substance on the seabed" .)

I've seen this clue in the King Feature Syndicate, The Telegraph and The Star Tribune.
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