* Originating in or belonging to another country: This is the most common meaning. For example, "foreign language," "foreign policy," or "foreign travel."
* Not native or familiar: This applies to anything that is not part of your usual environment or experience. This could include ideas, customs, or even emotions. For example, "a foreign concept" or "a foreign feeling."
* Not part of the original or essential nature of something: This meaning is less common but used in some contexts. For example, "foreign matter in the food."
It's important to note that "foreign" can sometimes carry negative connotations, implying something unfamiliar, strange, or even hostile. However, it can also be used neutrally or even positively, to describe something interesting or exciting. The specific meaning will depend on the context.