Definition of "brumby"

I'm too weak to ride. I'd have to ride, because for one thing the white-ants have eaten the wheels of my buckboard, and my one cart-horse has gone bush with the brumbies.

1938, Xavier Herbert, chapter VIII, in Capricornia‎, page 125

"It could mean one of two things," he said. "Either that help is coming, or that a herd of wild brumbies is passing somewhere near."

1943, H. Lorna Bingham, The Lost Tribe, Sydney: Winn and Co., page 31, column 2

He captures brumbies, the wild horses of the outback, running them down on motorcycles and shipping them to the city where they are butchered for pet food.

1967, December 22, Life‎, page 69

If the latter situation prevails, brumbies can be developed into valuable stockhorses, either for use on the local property or for sale in other areas.Whatever the condition of a captured brumby, there is always the potential of selling it for pet food, fish bait, or even for human consumption.

1976, Tom Lee McKnight, Friendly Vermin: A Survey of Feral Livestock in Australia‎, page 17

Harry Farquharson said there were two or three springs and that the horses were “bloody wild”. He said there were probably about 300 and they were good horses, a long way above the average brumby.

1988, Tom Cole, Hell West and Crooked