Movie spectacular failing to open (3)
I believe the answer is:
pic
'movie' is the definition.
(short for picture)
'spectacular failing to open' is the wordplay.
'spectacular' becomes 'epic' (I've seen this in another clue).
'failing to open' means to remove the first letter (the opening letter is removed).
'epic' with its initial letter removed is 'PIC'.
(Other definitions for pic that I've seen before include "Photo (colloq.)" , "Photo (informal)" , "film" , "Snapshot" , "illustration" .)