Incomplete rest cures, we hear, can still save us (8)
I believe the answer is:
rescuers
'still save us' is the definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.
'incomplete rest cures we hear' is the wordplay.
I cannot really see how this works, but
an anagram of 'cures' is 'rescu' which is located in the answer.
The remaining letters 'ers' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'can' acts as a link.
Can you help me to learn more?
(Another definition for rescuers that I've seen is " They deliver you from danger".)