sixth dan; 6th dan
Used in martial arts, go, shogi, and similar ranking systems to denote the sixth level of black belt or equivalent.
He holds a sixth dan in judo.
囲碁で六段を取るのは難しい。
It's difficult to achieve sixth dan in go.
Rokudan no Shirabe (koto piece)
六 (six) + 段 (dan, rank). A straightforward compound indicating the sixth rank in a dan-based grading system.