Rescue student stuck in wild (7)
I believe the answer is:
salvage
'rescue' is the definition.
(I know that salvage is a type of rescue)
'student stuck in wild' is the wordplay.
I cannot quite see how this works, but
'student' could be 'l' (as in L-plates for learner drivers) and 'l' is found within the answer.
'wild' could be 'savage' (synonyms) and 'savage' is found in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for salvage that I've seen before include "Rescue of a damaged ship or its cargo" , "Property that's rescued" , "Rescue (cargo) from wreck at sea" , "Rescue (and recycle?)" , "Restore" .)