Smash hit from Hammer? (11)
I believe the answer is:
blockbuster
'smash hit' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for blockbuster that I've seen before include "Film or book making huge profits" , "Sort of film" , "best seller?" , "Landmine" , "Large and forceful film, person etc" .)