As a Noun: 1. A large country, completely occupying the continent found south of East Asia, called Australia. As a Verb or Adjective: 1. To come from or relate to Australia. English = (be) Australian. Note: 1. This is an obsolete (old-fashioned) sign that is now only used by some older signers, or signers of other dialects of BANZSL (e.g., British Sign Language or New Zealand Sign Language) or Irish Sign Language. The other sign match for AUSTRALIA is by far the much more common sign.