noun which may take the genitive case particle 'no', noun
holding a dan rank
Used in martial arts, go, shogi, and similar disciplines to describe a person who has attained a dan rank (black belt or equivalent). Often used attributively with の.
彼は有段者だ。
He is a dan-holder.
有段の人はこのクラスに参加できます。
People with a dan rank can join this class.