Opening excerpt (7)
I believe the answer is:
passage
I believe this clue is a double definition.
'opening' is the first definition.
(thesaurus)
'excerpt' is the second definition.
(I've seen this before)
(Other definitions for passage that I've seen before include "Way through something" , "Section of text; journey" , "Sea/air journey" , "Alley - corridor" , "Some reading" .)