Calf-roping event (5)
I believe the answer is:
rodeo
'calf-roping event' 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 "Horse-riding competition for cowboys" , "Annually" , "Horse sporting event for cowboys" , "Cowboy event" , "Cowboy show" .)