Crash brings fellow trouble (4)
I believe the answer is:
fail
'crash' is the definition.
(thesaurus)
'fellow trouble' is the wordplay.
'fellow' becomes 'f' (abbreviation - of a society etc.).
'trouble' becomes 'ail' ('ail' can be a synonym of 'trouble'**).
'f'+'ail'='FAIL'
'brings' is the link.
(Other definitions for fail that I've seen before include "Run out; flop" , "Stop working properly" , "Be unsuccessful, say in exam" , "Come to naught" , "Break down" .)