noun. The back of a horse.

noun. A natural ridge; a hogback.

adverb & adjective. On the back of a horse.

On the back of a horse: as, to ride horseback. See horseback, n., 1.

noun. The back of a horse, particularly that part of the back on which the rider sits: used generally in the phrase on horseback, often abbreviated to horseback, and used adverbially.

noun. A low and somewhat sharp ridge of sand or gravel; also, but not generally, a ridge of rock which rises for a short distance with a sharp edge: a common term in New England, especially in Maine. Also called hogback, hog's-back, and boar's-back. Such ridges are called by Scotch geologists kames, by the Irish eskars.

noun. The back of a horse.

noun. An extended ridge of sand, gravel, and boulders, in a half-stratified condition.

noun. on the back of a horse; mounted or riding on a horse or horses; in the saddle.

noun. The back of a horse.

noun. A ridge of sand, gravel, and boulders.

adverb. On the back of a horse.

adverb. on the back of a horse

noun. the back of a horse

noun. a narrow ridge of hills

"There was nothing highfalutin about her company manners -- it was by this homely phrase that he differentiated this Dede on horseback from the Dede with the office manners whom he had always known."

body part  ridge  ridgeline  

bicycle  golf  

across  ahorse  ahorseback  astraddle  astride