Definition of Murray whaler in English:

Murray whaler

noun

Australian
historical
  • A swagman who follows the course of a river.

    ‘a fishing line forms part of most Murray whalers' travelling furniture’
    • ‘These eyesores are the dwellings of the river-tramps, derisively called the Murray whalers.’
    • ‘Out of these camps were bred the Murray whalers, the river's own distinctive race of sundowners.’
    • ‘A Murray whaler stands at ease for the camera beside his mud-and-timber shack.’
    • ‘The captain said that those people were river gypsies known as Murray Whalers.’
    • ‘A queer old Murray whaler lived in a bark hut near the junction.’

Origin

Late 19th century: from the Murray River + whaler in the Australian sense ‘a tramp following the course of a river’.