And after an interval a tall black boy of their own age ran breathlessly around the house and out toward the tethered horses.
There seemed to be just as many vehicles wallowing in the mud holes as there had been then, except that there were no Confederate ambulances, and just as many horses and mules tethered to hitching racks in front of the wooden awnings of the stores.
There are no more uses of "tether" in the book.
Show samples from other sources
My body dangles, tethered by a rope hooked to my belt.
Sabaa Tahir -- An Ember in the Ashes
Most of the others sat slumped and sleeping in wheelchairs lined up in front of a huge television screen, all tethered to oxygen tanks like withered balloons.
Laurie Halse Anderson -- The Impossible Knife of Memory