Brawl after anger almost produces depression (6)
I believe the answer is:
furrow
'depression' is the definition.
(furrow is a kind of depression)
'brawl after anger almost' is the wordplay.
'brawl' becomes 'row' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'after' says to put letters next to each other.
'anger' becomes 'fury' (I've seen this before).
'almost' means to remove the last letter (most of the word but not all of it).
'fury' with its last letter taken away is 'fur'.
'row' put after 'fur' is 'FURROW'.
'produces' is the link.
Can you help me to learn more?
(Other definitions for furrow that I've seen before include "Long shallow trench in the ground" , "A long groove or deep wrinkle" , "It's groovy!" , "Shallow trench made by a plough" , "Kind of groove, in land or on forehead" .)