noun
second-round debut wrestlers
Sumo term: wrestlers who are introduced in the second round of the ring-entering ceremony after the mae-zumo (pre-sumo) stage. They are still new recruits but have passed the initial trial.
二番出世の力士たちが土俵に上がった。
The second-round debut wrestlers entered the ring.
Compound of 二番 (second) and 出世 (promotion/debut in sumo context). The exact historical origin is uncertain; it is a technical term used in sumo stables.