"Waltzing Matilda" is a song developed in the Australian style of poetry and folk music called a #bushBallad. It has been described as the country's "unofficial national anthem". The title was Australian slang for travelling on foot, by walking (waltzing) with one's belongings in a "matilda" (swag) slung over one's back, a slang expression that may have originally been repurposed from a work of #lightVerse by #CharlesGodfreyLeland.
https://www.youtube.com/watch?v=xjYEskzWt6I