Relations seen in abattoir? (5,3,5)
I believe the answer is:
flesh and blood
'relations' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for flesh and blood that I've seen before include "Real - relatives" , "One's own family" , "Human nature - kin" , "Kin - of a bodily nature" , "Relatives (one's own?)" .)