一いっ階かい

noun

first floor; ground floor

In Japanese building numbering, 一階 normally means the street-level floor. This corresponds to 'first floor' in American English and often 'ground floor' in British English.

• 受うけ付つけは一いっ階かいにあります。

  The reception desk is on the first floor.

• 一いっ階かいのカフェで待まち合あわせましょう。

  Let's meet at the cafe on the ground floor.

noun

one floor; one storey

Uses 階 as a count of floors or storeys, often in compounds or measure-like phrases such as 一階建て and 一階分.

• この家いえは一いっ階かい建だてです。

  This house is one storey.

• 荷に物もつを持もって一いっ階かい分ぶんだけ階かい段だんを上のぼった。

  I carried the luggage up one floor's worth of stairs.

noun

one rank

Rare abstract use of 階 as a rank or grade. In everyday modern Japanese, expressions such as 一つ上, 一段上, or 一級上 are usually more natural.

• 「一いっ階かい上じょうの位くらい」は、「一ひとつ上うえの位くらい」と同おなじような意い味みです。

  The expression 一階上の位 means something like 'the rank one level above.'