aborigine (n.) Look up aborigine at Dictionary.com
1858, mistaken singular of aborigines (1540s; aboriginal is considered the correct singular in English), from Latin aborigines "the first inhabitants," especially of Latium, hence "the first ancestors of the Romans;" possibly a tribal name, or from or made to conform to the Latin phrase ab origine, which means literally "from the beginning," from ab "from" (see ab-) + ablative of origo (see from origin). Extended 1789 to natives of other countries which Europeans have colonized. Australian slang shortening Abo attested from 1922 (n.), 1906 (adj.).