Company conflict over gamble shows lack of courage (9)
I believe the answer is:
cowardice
'lack of courage' is the definition.
(I've seen this before)
'company conflict over gamble' is the wordplay.
'company' becomes 'co' (abbreviation).
'conflict' becomes 'war' (war is a kind of conflict).
'over' says to put letters next to each other.
'gamble' becomes 'dice' (dicing is a kind of gambling).
'co'+'war'+'dice'='COWARDICE'
'shows' is the link.
(Other definitions for cowardice that I've seen before include "Lack of bravery" , "Spineless character" , "Craven fear in face of enemy" , "Spinelessness" , "not bravery, either" .)