billabong [bil-uh-bawng, -bong] /ˈbɪl əˌbɔŋ, -ˌbɒŋ/ Show IPA
a branch of a river flowing away from the main stream but leading to no other body of water; a blind or dead-end channel.
a creek bed holding water only in the rainy season; a dried-up watercourse.
a stagnant backwater or slough formed by receding floodwater.
1830–40; < Wiradjuri bilabaŋ creek that runs only during the rainy season, equivalent to bila river + baŋ possessive suffix