Jackaroo

from The Collaborative International Dictionary of English v.0.48
Jackaroo \Jack`a*roo"\, n. Also Jackeroo \Jack`e*roo"\ [Jack +
   kangaroo.]
   A young man living as an apprentice on a sheep station, or
   otherwise engaged in acquainting himself with colonial life.
   [Colloq., Australia]
   [Webster 1913 Suppl.]
from The Collaborative International Dictionary of English v.0.48
Jackaroo \Jack`a*roo"\, v. i.
   To be a jackaroo; to pass one's time as a jackaroo. [Colloq.,
   Australia]
   [Webster 1913 Suppl.]
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