I. ȯ-ˈstrāl-yən, ä-, ə- adjective
Date: 1814
1. : of, relating to, or characteristic of the continent or commonwealth of Australia, its inhabitants, or the languages spoken there
2. : of, relating to, or being a biogeographic region that comprises Australia, the islands north of it from Celebes eastward, Tasmania, New Zealand, and Polynesia
II. noun
Date: 1814
1. : a native or inhabitant of the Australian commonwealth
2. : a group of about 200 languages spoken by the aboriginal inhabitants of Australia