Western Australia /ˈwɛstə(ɹ)n əˈstɹeɪljə/ noun1 •A state of Australia, occupying the western third of the continent; a former British colony until 1901. Capital: Perth.AO Neville, the Protector of Aborigines in Western Australia until the 1930s, railed against the risk of the creation of a ‘third race’ of half-castes. — 2021