Meaning

noun a film about life in the western United States during the period of exploration and development

noun a sandwich made from a western omelet

adjective relating to or characteristic of the western parts of the world or the West as opposed to the eastern or oriental parts

originFrom Middle English westerne, from Old English westerne, from Proto-Germanic *westrōnijaz. By surface analysis, west + -ern.

Etymology from Wiktionary, CC BY-SA 3.0