horse.

It would not do, for instance, to introduce mules and donkeys into a division of the term horse.

Deductive Logic St. George William Joseph Stock

"If your Majesty will order that gentleman, who is at present taking my likeness, to hand me a sheet of paper and his brushes, I will endeavor to draw for your Majesty an outline of the animal I speak of, and which we call a horse."

By Right of Conquest Or, With Cortez in Mexico 1867

So, destroying wilderness by domesticating land is to break its will, much like one might break a horse.

Bill Chameides: Whither Wilderness? 2009

I soon gathered from him that he was a horsedealer from Bala, and that he had been out on the road with his servant to break a horse.

Wild Wales : Its People, Language and Scenery 2004

Instead he always fought and tried to control every aspect of flight, like he was trying to break a horse.

Ice Hunt Rollins, James, 1961- 2003

At any rate it was barely three when a knock at the door aroused me and by four I stumbled out into the black starlit night to find saddled for me in the mule-corral what might by a considerable stretch of the word be called a horse.

Tramping Through Mexico, Guatemala and Honduras — Being the Random Notes of an Incurable Vagabond Harry Alverson Franck 1921

Indian on a pony it was a regular Indian and a regular pony -- not one of those cotton-batting things with fat legs that an impressionist slaps on to a canvas and labels a horse.

Cobb's Bill-of-Fare Peter Newell 1910

The contractor was not a sportsman as the term is generally understood, but he was a man who could strip a gun, make or mend harness, or break a horse.

The Gold Trail Harold Bindloss 1905

The element essentially dry receives therefore the name of earth, as the animal who has a neigh for a characteristic cry is called a horse.

NPNF2-08. Basil: Letters and Select Works 1895

Formerly they had used dogs to drag the travois, but now they used the "elk-dog," as they first called the horse.

The Passing of the Frontier; a chronicle of the old West Emerson Hough 1890