Sentence:  Even though we were dead serious about this <WSD>oat-burner</WSD>, the home audiences probably collapsed when, along with the Old West dialogue and scenes, they heard the honking and screeching noises of automobiles or the roaring of airplanes overhead. 
Meaning of the word marked with <WSD> tags:  A film, radio or television show, or theatrical production set in the Old West; horse opera.