Merriam-Webster has the verb "to buffalo" as going back to 1891, with no notion of it being specific to any particular locale. The OED says it's "North American

Merriam-Webster has the verb "to buffalo" as going back to 1891, with no notion of it being specific to any particular locale. The OED says it's "North American slang," while Google's dictionary calls it "informal". I've certainly heard it in conversation on the east and west coasts of the U.S. (albeit very occasionally). [Added:] For all sorts of American examples over the decades, see https://stancarey.wordpress.com/2018/04/23/buffaloed-by-the-verb-buffalo/ https://stancarey.wordpress.com/2018/04/23/buffaloed-by-the-...