Help victim of trick, for crying out loud (7)
I believe the answer is:
succour
'help' is the definition.
(succouring is a kind of helping)
'victim of trick for crying out loud' is the wordplay.
'victim of trick' becomes 'sucker'.
'for crying out loud' indicates a 'sounds like' (homophone) clue.
'sucker' is a homophone of 'SUCCOUR'.
(Other definitions for succour that I've seen before include "helping hand" , "Help given in time of need" , "Aid in time of difficulty" , "Give assistance in time of difficulty" , "Relief in time of distress" .)