Nature's provision of shelter for sailors? (6)
I believe the answer is:
cavern
'nature's' is the definition.
The definition and answer can be both natural objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'provision of shelter for sailors?' is the wordplay.
'provision of shelter for' becomes 'cave' (I can't justify this - if you can you should believe this answer much more).
'sailors?' becomes 'RN' (abbreviation for Royal Navy).
'cave'+'rn'='CAVERN'
Can you help me to learn more?
(Other definitions for cavern that I've seen before include "Grotto" , "Detection device" , "Subterranean chamber" , "Large 24 chamber" , "Craven in a cave" .)