Attack director's review of two books and movie (4-4)
I believe the answer is:
dive-bomb
'attack' is the definition.
(I know that dive-bomb is a more specific form of the action bomb)
'director's review of two books and movie' is the wordplay.
'two books' can mean two replacements for 'book'.
'director' becomes 'd' (abbreviation eg in film reviews).
'review of' indicates anagramming the letters.
'book' becomes 'b' (abbreviation for book).
'book' becomes 'b' (abbreviation for book).
'and' says to put letters next to each other.
'b'+'b'='bb'
'bb' after 'movie' is 'moviebb'.
'moviebb' anagrammed gives 'ivebomb'.
'd'+'ivebomb'='DIVE-BOMB'
(Other definitions for dive-bomb that I've seen before include "Moved bib (anag.)" , "Aerially attack target" , "Attack from a rapidly descending plane" , "Perform a steep aerial attack on (a target)" , "Attack from a steep angle" .)