raised bales on the outer rim of the sumo ring
Sumo term. The four bales placed slightly higher than the others at the outer edge of the dohyō, marking the corners.
The wrestler's foot caught on a raised bale and he stepped out of the ring.
The raised bales are placed at the four corners of the ring.
Compound of 上げ (age, 'raised') + 俵 (tawara, 'straw bale'), referring to the bales that are set higher than the others on the sumo ring.