Nor was this all; seeing something projecting through the soil at the bottom of the bared patch ofwalling, I removed the loose earth with my hands, and revealed a huge stone ring, a foot or more in diameter, and about three inches thick.
2014, Carl Schuchhardt,Schliemann's Excavations, page252:
“All three,” says Dr. Schliemann, “were unusually large, and appeared to have been forced into the small space of only 5 feet 6 inches, left for them between the innerwallings[…]
Material used for walls.
A method of torture in which a person's neck is encircled by a collar, which is then used to slam the person against a wall.