血ちだまり

noun

puddle of blood; pool of blood

Refers to a visible accumulation of blood on a surface, often in crime or accident scenes.

• 床ゆかに血ちだまりができていた。

  There was a puddle of blood on the floor.

• 現げん場ばには大おおきな血ちだまりがあった。

  There was a large pool of blood at the scene.