Team spirit (6,2,5)
I believe the answer is:
esprit de corps
'team spirit' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for esprit de corps that I've seen before include "Feeling of pride and loyalty shared by members of a group (French)" , "Group's mutual loyalty" , "Spirit of loyalty - purpose of a group" , "Sense of unity" , "The feeling's mutual!" .)