一いっ間けん

noun

one ken (approx. 1.8 m)

A traditional Japanese unit of length, still used in architecture and real estate to describe room dimensions or pillar spacing.

• この部屋へやは六ろく畳じょうで、長ながさが一いっ間けん半はんあります。

  This room is six tatami mats, and its length is one and a half ken.