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Meaning of jackeroo

jack•e•roo

Pronunciation: ( jak"u-r'), [key]
— n., pl. v., -roos, -rooed, -roo•ing.
—n.
  1. an inexperienced person working as an apprentice on a sheep ranch.
—v.i.
  1. to work as an apprentice on a sheep ranch.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.