Lack of bravery in firm conflict over game of chance (9)
I believe the answer is:
cowardice
'lack of bravery' is the definition.
(I've seen this before)
'firm conflict over game of chance' is the wordplay.
'firm' becomes 'co' (a firm is a company).
'conflict' becomes 'war' (war is a kind of conflict).
'over game of chance' becomes 'dice' (I can't justify this - if you can you should believe this answer much more).
'co'+'war'+'dice'='COWARDICE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for cowardice that I've seen before include "Spineless character" , "court-martial offence" , "Lack of bravery" , "Severe lack of courage" , "Quality of chicken" .)