1 belonging to or connected with a country that is not your own 外国的: a foreign country/coin/accent 外国；外国硬币；外国口音to learn a foreign language 学外语

2 (only before a noun 只用于名词前) dealing with or involving other countries 涉及其他国家的: foreign policy (= government decisions concerning other countries) 外交政策foreign affairs/news/trade 外交事务；外国新闻；对外贸易the French Foreign Minister 法国外长

3 (used about an object or a substance) not being where it should be （指物体或物质）不应在某处的: The X-ray showed up a foreign body (= object) in her stomach. Ｘ光片显示她胃内有异物。