Ahorse

on horseback:
to escape ahorse.
historical examples

the king forthwith sent the pennons, and bade them without fail be armed and ahorse at dawn.
sir gawain and the lady of lys anonymous

from every side, there was the sound of an arrival of men, both on foot and ahorse.
the treasure of pearls gustave aimard

already they are ahorse, and off they go, with bows and arrows.
four arthurian romances chretien detroyes

he then said that he could not very well give me ahorse, “with saddle and bridle also.”
the purple land w. h. hudson

they’re ahorse, and they should arrive in three hours and you can’t possibly escape.
the hosts of the air joseph a. altsheler

need it be said that kenneth montagu was ahorse and after the coach within a few minutes.
a daughter of raasay william macleod raine