an aromatic herb, Angelica sinensis, of the parsley family, native to China and Japan, used to treat menopausal symptoms, premenstrual syndrome, and menstrual irregularity.
dong quai (dŏŏng kwā, kwī) n. A perennial aromatic herb (Angelica sinensis) native to China and Japan, yielding a root that is used medicinally for gynecological disorders such as premenstrual syndrome, menstrual cramps, and menopausal symptoms.
[Chinese (Mandarin) dāng guī : dāng, should, ought + guī, return (from the belief that it causes blood to return where it should).]