鼠そ巣そう

noun

rat's nest

Refers to a nest made by rats; can also be used figuratively for a messy, chaotic place.

• 古ふるい家いえの床ゆか下したに鼠そ巣そうが見みつかった。

  A rat's nest was found under the floor of the old house.

• 彼かれの部屋へやはまるで鼠そ巣そうのように散ちらかっている。

  His room is as messy as a rat's nest.