Definition of horse duffer in English:

horse duffer

noun

Australian
historical
  • A horse thief.

    ‘an organized gang of horse duffers was marauding in the region’
    • ‘He was instructed to keep his eyes open for evidence of any cattle or horse duffers in his direction.’
    • ‘That's why there's never a cattle or horse duffer caught in these parts.’
    • ‘This was a horse duffer's back route.’
    • ‘An outlaw horse duffer like Jerry was often given refuge by some of the poorer emancipist squatters.’
    • ‘He was king of the horse-duffers in the Kimberley Ranges at the turn of the century.’
    • ‘He says you've hooked yourself up with a gang of horse-duffers.’
    • ‘He arrested a notorious horse-duffer at the Rankin River police station.’
    • ‘He narrates happenings among horse-duffers in western New South Wales.’

Origin

Late 19th century: from duffer.