JMdict: 1161380

一階 【いっかい】

  1. [n] first floor; ground floor
  2. [n] one floor; one storey
  3. [n] one rank
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
One, One Radical (no.1) イチ, イツ ひと-, ひと.つ
Storey, Stair, Counter For Storeys Of A Building カイ きざはし

Words often seen with this one: (experimental feature)

部屋 (16), 二階 (14)