billabong/ˈbɪləˌbɒŋ/EtymologyFrom Wiradjuri bilabang, likely a compound from Wiradjuri bila (“river”) and Wiradjuri bong or Wiradjuri bung (“dead”).nameA locality in the Shire of Wellington, south eastern Victoria, Australia.nounAn anabranch, backwater or oxbow lake that is temporarily cut off from the main river, especially one that is only filled with water during the rainy season and can sometimes dry up completely.“Oh there once was a swagman camped in the billabong, Under the shade of a coolibah tree, And he sang as he looked at the old billy boiling, 'Who'll come a'waltzing Matilda, with me.'”