horseback
n. uncountablen. the back of a horse, where you sit when you are riding it. You use this word most often when describing how someone travels.
n. the back of a horse, specifically the area where a rider sits. Used almost exclusively in the prepositional phrase 'on horseback' to describe a mode of travel or activity.
They explored the mountain trails on horseback.
The police officers patrolled the crowded park on horseback to get a better view of the area.
Before the advent of the steam engine, traveling on horseback remained the most efficient method for messengers to deliver urgent documents across the rugged countryside.
From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.
Primarily used within the fixed prepositional phrase 'on horseback'; rarely functions as a subject or direct object in modern English.
he arrived by horsebackhe arrived on horsebackWhile we say 'by car' or 'by train', the standard idiom for animal travel is 'on horseback'.