ワディ

noun

wadi; dry riverbed; arroyo

A valley or dry riverbed in arid regions, typically carrying water only after heavy rain. Used in geographical and travel contexts.

from Arabic

• サハラ砂さ漠ばくには多おおくのワディがある。

  There are many wadis in the Sahara Desert.

• 雨あめが降ふると、ワディは一いち時じ的てきに川かわになる。

  When it rains, the wadi temporarily becomes a river.