Rodeo hat (7)
I believe the answer is:
stetson
'rodeo hat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stetson that I've seen before include "Tip" , "A wide-brimmed cowboy hat" , "Hat with broad brim and high crown" , "Large hat" , "Hat with wide brim and high crown, maybe a cowboy's" .)