Crazy icon wandering around, wandering (7)
I believe the answer is:
nomadic
'wandering' is the definition.
(I know that wandering can be written as nomadic)
'crazy icon wandering around' is the wordplay.
'crazy' becomes 'mad' (synonyms).
'wandering' indicates an anagram.
'around' is an insertion indicator.
'icon' is an anagram of 'noic'.
'mad' put within 'noic' is 'NOMADIC'.
(Other definitions for nomadic that I've seen before include "Not settling" , "Given to wandering, like travelling tribes" , "Migratory" , "Of no fixed abode" , "Given to wandering like travellers or Bedouins" .)