Dictionary / Vocabulary / 一階
いっかい
first floor; ground floor; one floor; one storey
common word Also written １階
彼女はその箱を１階に運んでもらった。
She had the box carried downstairs.
彼は私より一階級上だ。
He is immediately above me in rank.
火事は１階から出た。
A fire broke out on the first floor.