Extend country club when no options are left (4,6)
I believe the answer is:
last resort
'left' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for last resort that I've seen before include "when everything else has failed?" , "Final expedient" , "When all else fails, try this" .)