DEF: people who were the first people to live in a country, before any colonists arrived
Merriam-Webster Online Dictionary
aboriginal (adjective)1.
being the first or earliest known of its kind present in a region - aboriginal forests aboriginal rocks
2.
a) of or relating to - aborigines
b) often capitalized of or relating to the indigenous peoples of Australia native
1.
- aborigine
2.
often capitalized - aborigine