Worrying criminal gang importing drink (7)
I believe the answer is:
nagging
'worrying' is the definition.
(nagging is a kind of worrying)
'criminal gang importing drink' is the wordplay.
'criminal' is an anagram indicator.
'importing' is an insertion indicator.
'drink' becomes 'gin' (gin is a kind of drink).
'gang' anagrammed gives 'nagg'.
'nagg' enclosing 'gin' is 'NAGGING'.
(Other definitions for nagging that I've seen before include "Pestering, plaguing" , "Henpecking" , "Persistent (toothache)" , "Persistently finding fault" , "Persistently worrying" .)