horseback
nounadverbattested in dialogue
- United Kingdom//ˈhɔːsˌbæk//
- United States//ˈhɔɹsˌbæk//
The back of a horse.
noun
- 1
The back of a horse.
They came on horseback across the plains.
- 2
A ridge of sand, gravel, and boulders.
Etymology
From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.
adverb
- 1
On the back of a horse.
Forms
- plural
- horsebacks