Exhibition of cowboy skills (5)
I believe the answer is:
rodeo
'exhibition of cowboy skills' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rodeo that I've seen before include "Cattle round-up" , "Exhibition of cowboy skills" , "Western show" , "display of cowboy skill" , "Horse-riding competition for cowboys" .)