1.
home country; country of origin; one's own country
The country a person is a national of, or the country where an organization is based, spoken of from outside it. Used of citizens abroad, foreign residents, and the headquarters of a company or government.
本 (main, one's own) + 国/国 (country). The word implies a viewpoint outside that country — it is used of someone abroad looking back home, not by a person speaking about the country they are standing in.