本間

ほんけん, ほんまhonken

noun

1. measure of length corresponding to 6 shaku (approx. 1.82 meters)
2. official size of a tatami mat for measuring room size (esp. a Kyoto-size tatami mat)
3. basic rhythm (in traditional Japanese music)
4. room (in a brothel) of a prostitute of the highest rank

Study it in Yanamino