A row involving boy in pantomime (7)
I believe the answer is:
aladdin
'pantomime' is the definition.
(I've seen this before)
'a row involving boy' is the wordplay.
'row' becomes 'din' (both can mean a loud disturbance).
'involving' means one lot of letters goes inside another.
'boy' becomes 'lad' (lad is a kind of boy).
'a'+'din'='adin'
'adin' placed around 'lad' is 'ALADDIN'.
'in' is the link.
(Other definitions for aladdin that I've seen before include "Finder of magic lamp in Arabian tale" , "Pantomime boy with wonderful lamp" , "Common panto hero" , "12" , "Lad with a lamp" .)