Business bureau Tory pal ruined (6,7)
I believe the answer is:
beauty parlour
'business' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'bureau tory pal ruined' is the wordplay.
'ruined' indicates an anagram.
'bureau'+'tory'+'pal'='bureautorypal'
'bureautorypal' with letters rearranged gives 'BEAUTY-PARLOUR'.
Can you help me to learn more?
(Other definitions for beauty parlour that I've seen before include "Grooming salon" , "Establishment for prettification" .)