What is the meaning of Barbarian?

Relating to people, countries, or customs perceived as uncivilized or inferior.

A non-Greek or a non-Roman citizen.

An uncivilized or uncultured person, originally compared to the hellenistic Greco-Roman civilisation; often associated with fighting or other such shows of strength.

A person destitute of culture; a Philistine.

Someone from a developing country or backward culture.

A warrior, clad in fur or leather, associated with sword and sorcery stories.

A cruel, savage, inhumane, brutal person; one without pity or empathy.

A foreigner, especially with barbaric qualities as in the above definitions.

Source: wiktionary.org