What is the meaning of Westerner?

A native or inhabitant of the west of a region (or of the world as a whole).

1. A native or inhabitant of the West, of the Western world—The United States, Canada, Western Europe, Australia, and New Zealand.

   A native or inhabitant of the West, of the Western world—The United States, Canada, Western Europe, Australia, and New Zealand.

   A native or inhabitant of the Wild West.

   indefinite plural of western

   Source: wiktionary.org