blood vessels
Anatomical term for blood vessels. Cross-referenced with 血の道 (ちのみち) sense 2, suggesting this is a variant or related form. Rare standalone use; more commonly encountered in medical or historical contexts.
See also: 血の道 (ちのみち)
In old medical texts, the word 血道 can refer to blood vessels.
Compound of 血 (blood) and 道 (path, way). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning 'blood vessels'.