一いっ間けんいっけんFreq.FrequencyTop 100,000Meanings1nounone 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.
