'Jackeroo' definitions:

Definition of 'Jackeroo'

From: GCIDE

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.]