外そと寝ね

noun

sleeping outside on a hot summer night

Rare term for the practice of sleeping outdoors to escape indoor heat during summer, often on a veranda or in a garden.

• 昔むかしは、暑あつい夏なつの夜よるに外そと寝ねをする家いえも多おおかった。

  In the past, many households would sleep outside on hot summer nights.