단의 뜻
주부9단이 소개하는 집안일 노하우

단 here, what does it mean?

Thanks so much

Question

단의 뜻
주부9단이 소개하는 집안일 노하우

단 here, what does it mean?

Thanks so much

Answer

"단" simpley refers to "Grade/ Rank/ Rate" 
There is a similar term like "(등)급"

Ex) 너는 태권도가 몇 단이니?
= What rank are you in Taekwondo?

Answer

단(段) is the rank of the traditional board game Go(바둑)
There are 9 ranks from 1 to 9 단 for professional player of Go.
9 단 is the highest rank of professional player of Go.
Thus, 9단 means "master of some field"

주부9단 means "master of housewife"