Wiktionary
buckeroo
n. (alternative spelling of buckaroo English)
WordNet
Usage examples of "buckeroo".
There were quiet voices, chords on a piano off in a corner, and a pansy tenor singing "My Little Buckeroo" as confidentially as a bartender mixing a Mickey Finn.
Maybe a little bit on the baby side (a kid in a Stetson on a horse, happy birthday buckeroo in letters that were supposed to look like wood on the inside), but not gushy.