A movie we back (7)

I believe the answer is:

western

'a movie' is the definition.
(I know that Western is a type of feature film)

'we back' is the wordplay.
'back' becomes 'stern' (stern means the back of a boat).
'we'+'stern'='WESTERN'

(Other definitions for western that I've seen before include "The Occident" , "Spaghetti film?" , "Type of film or music" , "Old film genre, horse opera" , "American film" .)

I've seen this clue in the Evening Standard.

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