Noun

(en noun)

(Australia, Queensland, obsolete) A white man living outside white settlement.

(Australia) A trainee station manager or owner, working as a stockman or farm hand; formerly, a young man of independent means working at a station in a supernumerary capacity to gain experience.

* 1895 , , Saltbush Bill'', ''The Man from Snowy River and Other Verses , page 37,

But this is the tale of a Jackaroo that came from a foreign strand, / And the fight that he fought with Saltbush Bill, the King of the Overland.

* 1964 , Russel Braddock Ward, The Penguin Book of Australian Ballads , page 86,

A Jackeroo lived, as a kind of gentleman apprentice, in the squatter?s or manager?s homestead, not in the men?s huts; but most of his daily work was done side by side with the working ‘hands’.

* 1974 , The Pastoral Review , Volume 84, page 611,

Frequently the overseer would come to me and say a certain jackeroo was useless, and would never be any good, when the boy had only just started.

Noun

(en noun)

A man who tends free-range cattle, especially in the American West.

*{{quote-book, year=1899, author=(Stephen Crane)

, title=, chapter=1 , passage=There was some laughter, and Roddle was left free to expand his ideas on the periodic visits of cowboys to the town. “Mason Rickets, he had ten big punkins a-sittin' in front of his store, an' them fellers from the Upside-down-F ranch shot 'em up […].”}}

A man who identifies with cowboy culture, including wearing a cowboy hat and being a fan of country and western music.

(label) A person who engages in reckless behavior, especially for the purpose of showing off.

A dishonest and/or incompetent independent tradesman.

A playing card of king rank.