Slang A movie about frontier or cowboy life; a western. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "oater" in a sentence
"Variously dubbed the "oater," the "shoot-em-up," or a "blood and thunder" novel, the western emerged during Grey's lifetime as a major literary genre and remains one of the singular American contributions to literature and the cinema."
"Now, they're barely a separate category in Netflix and, if you order an old-fashioned "oater" from Netflix, it usually triggers some rueful "sorry, but this will take more time" email as Netflix desperately taps inventories scattered across the country."
"I can happily watch Grahame in anything, so I decided to sit there and watch this oater while going through my morning routine (in the end, I ended up watching roughly three quarters)."