1960  All these things, said Joe, he found out in the past 19 years. Although he cowboyed as a lad and has bought and sold horses all his life he wasn't even sure of the name of the first spotted horse he bought in 1940.
1964  . . . Mooney told the court that he has had 20-odd years experience cowboying in Arizona, Utah, Wyoming and B.C. . . .
2v. bring under control, as an unbroken horse, a wild steer, etc.
1927  (1929)  Rider must hook 'em in the shoulder and holler first jump and then cowboy him in the best way he knows how.
1962  "Can'tcha cowboy a little yearling like that 'thout trouble?"