- aborigine (n.) 1858, mistaken singular of aborigines (1540s; the correct singular is aboriginal), from L. Aborigines "the first ancestors of the Romans; the first inhabitants" (especially of Latium), possibly a tribal name, or from ab origine, lit. "from the beginning." Extended 1789 to natives of other countries which Europeans have colonized. Australian slang shortening Abo attested from 1922.
Etymology dictionary. 2014.