Shaky cover provided around City area (8)
I believe the answer is:
insecure
'shaky' is the definition.
(similar in meaning)
'cover provided around city area' is the wordplay.
'cover provided' becomes 'insure' (I can't explain this - if you can you should believe this answer much more).
'around' means one lot of letters goes inside another.
'city area' becomes 'EC' (EC is a London postcode area).
'insure' placed around 'ec' is 'INSECURE'.
Can you help me to learn more?
(Other definitions for insecure that I've seen before include "Wavering" , "Lacking self-confidence or assurance" , "(Feeling) unsafe" , "Fearful, unsafe." , "exposed to danger" .)