Leads in Ibsen dramas often lacking for film star (4)
I believe the answer is:
idol
'film star' is the definition.
(I've seen this before)
'leads in ibsen dramas often lacking' is the wordplay.
'leads in' indicates taking the first letters (I've seen 'lead in' mean this).
The first letters of 'ibsen dramas often lacking' is 'IDOL'.
'for' acts as a link.
(Other definitions for idol that I've seen before include "Who's greatly respected" , "Worshipped statue" , "'There's a one-eyed yellow -' (Hayes)" , "Darling" , "Subject of adoration, may be graven" .)