Worried parent drinking whisky or port (7)
I believe the answer is:
antwerp
'port' is the definition.
(Belgian port)
'worried parent drinking whisky' is the wordplay.
'worried' indicates anagramming the letters (worry can mean to interfere with or disturb).
'drinking' indicates putting letters inside (inserted letters are consumed or drunk).
'whisky' becomes 'W' (phonetic alphabet: alpha, bravo, charlie etc.).
'parent' with letters rearranged gives 'anterp'.
'anterp' going around 'w' is 'ANTWERP'.
'or' acts as a link.
(Other definitions for antwerp that I've seen before include "harbour" , "North Sea port" , "Van Dyck birthplace" , "Wrap net around this Belgian city" , "Belgian city/port" .)