also: おけつ
noun
impure blood; bad blood
Refers to blood that is considered impure or unhealthy, often in traditional or folk medical contexts.
昔の人は、悪血を抜くために瀉血を行った。
In the old days, people performed bloodletting to remove impure blood.
この漢方薬は悪血を取り除くと言われている。
This herbal medicine is said to remove bad blood.
瘀血 (おけつ) is a traditional Chinese medicine term for stagnant or clotted blood, while 悪血 (あくち/おけつ) refers more broadly to impure or bad blood.
Compound of 悪 (bad, evil) and 血 (blood). The reading おけつ is the on'yomi combination, while あくち mixes on'yomi and kun'yomi.