Hide in this processing plant (7)
I believe the answer is:
tannery
'hide in this processing plant' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for tannery that I've seen before include "Leather-processing plant" , "Building involved in making leather" , "Where hides are made into leather" , "Leather works" , "skin treatment facility" .)