Horse opera (7)
'horse opera' is the definition.
(I know that horse opera can be written as Western)
This is all the clue.
(Other definitions for western that I've seen before include "Cowboy film of occidental origin" , "direction?" , "Cowboys and Indians film" , "Old film genre, horse opera" , "American film" .)
'horse opera' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oater that I've seen before include "Horse" , "Film" .)