What is the meaning of word Lithuanian?

Lithuanian is an adjective referring to Lithuania, a country in northern Europe, as well as its people, culture, history, and language. It can also be used as a noun to refer to a person from Lithuania or something related to the country. The word "Lithuanian" comes from the Proto-Baltic term *Lietuva, whose exact origin is not fully understood. Some believe it comes from a river name, while others connect it to words related to rain or thunder. Regardless of its etymology, the term "Lithuanian" carries historical and cultural significance for the people and heritage of Lithuania.