Australia UK /ɒˈstɹeɪ.liː.ə/US /ɔˈstɹeɪl.jə/ noun3 •An island of Oceania.This is all that I can have a certain knowledge of as to that side of Australia ... — 1693 •A country consisting of a main island, the island of Tasmania and other smaller islands, located in Oceania; historically, a collection of former colonies of the British Empire. Official name: Commonwealth of Australia. Capital: Canberra.During Movember (the month formerly known as November), men around the globe grow mustaches (hence the name) while raising money for men’s health issues. Movember started in Australia in 2003. — 2011 •A continent consisting of the land on the Australian tectonic plate, i.e. Australia, New Guinea and intervening islands.He is going to Australia for his honeymoon for 10 days.