銀ぎん蝿ばえ

noun

large silvery fly

Colloquial term for a large fly with a silvery sheen, often referring to blowflies or similar species.

• 台だい所どころに銀ぎん蝿ばえが飛とんでいた。

  A large silvery fly was flying around in the kitchen.

• 銀ぎん蝿ばえが窓まどにぶつかっている。

  A large silvery fly is bumping against the window.