Coat split by a bachelor in a fight (6)
I believe the answer is:
combat
'a fight' is the definition.
(I know that fight can be written as combat)
'coat split by a bachelor in' is the wordplay.
'coat split' becomes 'com' (I am not sure about this - if you are sure you should believe this answer much more).
'by' becomes 'at'.
'a bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'in' is an insertion indicator.
'com'+'at'='comat'
'comat' enclosing 'b' is 'COMBAT'.
Can you help me to learn more?
(Other definitions for combat that I've seen before include "Battle, warfare" , "Fight against; fighting" , "type of jacket" , "Armed fighting" , "Take action to deal with - fight" .)