Wandering change for coin with nutty centre (7)
I believe the answer is:
nomadic
'wandering' is the definition.
(I know that wandering can be written as nomadic)
'change for coin with nutty centre' is the wordplay.
'change for' indicates an anagram.
'with' means one lot of letters goes inside another.
'nutty centre' becomes 'mad' (I can't justify this - if you can you should give a lot more credence to this answer).
'coin' is an anagram of 'noic'.
'noic' going around 'mad' is 'NOMADIC'.
Can you help me to learn more?
(Other definitions for nomadic that I've seen before include "Given to wandering like travellers or Bedouins" , "Given to wandering, like travelling tribes" , "vagrant" , "Drifting off" , "Migratory" .)