Lab rebuilt round ruined manor produces rum (8)
I believe the answer is:
abnormal
'rum' is the definition.
(I've seen this before)
'lab rebuilt round ruined manor' is the wordplay.
'rebuilt' is an anagram indicator.
'round' is an insertion indicator.
'ruined' indicates anagramming the letters.
'lab' is an anagram of 'abl'.
'manor' with letters rearranged gives 'norma'.
'abl' enclosing 'norma' is 'ABNORMAL'.
'produces' is the link.
(Other definitions for abnormal that I've seen before include "Odd" , "Not typical or usual" , "Unusual, atypical" , "Highly unusual" , "Moral ban (anag.)" .)