referee for the third-lowest sumo division
A sumo referee (gyōji) rank responsible for officiating matches in the sandanme division, the third-lowest professional sumo division.
The sandanme-kaku referee stepped onto the ring.
He was promoted from sandanme-kaku to makushita-kaku.
行司 is the general term for a sumo referee, while 三段目格 specifies the rank within the gyōji hierarchy.
三段目 is the division name; 三段目格 is the referee rank that officiates that division.
Compound of 三段目 (sandanme, the third-lowest sumo division) and 格 (kaku, rank/status).