古ふる血ち

noun

impure blood; old blood

Refers to blood that is considered impure or stagnant, often in a traditional or folk-medicine context. The term is not common in modern medical usage.

• 昔むかしの人ひとは、古ふる血ちが体からだに悪わるいと考かんがえていた。

  People in the past believed that impure blood was bad for the body.