The story
- Wiradjuri · borrowed frombung“dead”
- Wiradjuri · borrowed frombong
- Wiradjuri · borrowed frombila“river”
- Wiradjuri · borrowed frombilabang
- English todaybillabong
From Wiradjuri bilabang, likely a compound from Wiradjuri bila (“river”) and Wiradjuri bong or Wiradjuri bung (“dead”).
Etymology from Wiktionary, CC BY-SA 4.0.