Slaughterhouse for animals (8)
I believe the answer is:
abattoir
'slaughterhouse for animals' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for abattoir that I've seen before include "Building used for butchery" , "it makes a killing" , "place providing neat dispatches?" , "place where animals die" , "shambles once" .)