This is the 4769th most frequent Swedish word.
australisk
Australian.
Here, 'australisk' is the adjective form modifying 'öknen' (desert) to specify its geographical location.
Den australiska öknen är känd för sitt torra klimat.
The Australian desert is known for its arid climate.
In this sentence, 'australisk' is used as an adjective modifying 'musik' (music) to express the cultural origin of the music.
Jag älskar australisk musik, särskilt didgeridoo-toner.
I love Australian music, especially didgeridoo tones.
This usage of 'australisk' acts as an adjective paired with 'kultur' (culture) to indicate the national cultural context.