段を取る (だんをとる) Japanese meaning | KotomoraMeanings
1
expression, godan verb (-ru)
get a black belt; obtain a dan rank
Used in martial arts such as judo, karate, and kendo for earning a dan (black belt) rank. The expression is specific to the dan ranking system.
古
が
必
要
だ
。
To obtain a dan rank, years of training are necessary.