four tassels hung above the ring
Sumo term for the four decorative tassels suspended from the corners of the canopy above the dohyō.
Four tassels are hung above the sumo ring.
Compound of 四 (four) and 房 (tassel, tuft). The reading しぶさ is a straightforward combination of the on'yomi し and the kun'yomi ぶさ.