江戸間 えどま Meanings Noun standard measurement for the distance between pillars in eastern Japan (approx. 182 cm) See also: 田舎間 (いなかま). Kanto-size tatami mat (approx. 176 cm by 88 cm) See also: 田舎間 (いなかま). Kanji 江 creek. Read as え. 戸 door 間 interval. Read as ま. Jinuma: Japanese Dictionary · Word lists