Brides distraught in the rubble (6)
I believe the answer is:
debris
'the rubble' is the definition.
(synonyms)
'brides distraught' is the wordplay.
'distraught' indicates an anagram (an unsettled or upset order of the letters).
'brides' anagrammed gives 'DEBRIS'.
'in' acts as a link.
(Other definitions for debris that I've seen before include "Brides (anag) - bits and pieces" , "Refuse remains" , "Rubble, lots of broken pieces" , "Remains - wreckage" , "Rubble, heap of broken pieces" .)