생물체 내에서 혈액, 림프, 정액 등의 액체를 운반하는 도관이나 맥관.
An anatomical vessel or duct that conveys fluid such as blood, lymph, or semen.
예문:
"The surgeon carefully identified the vas deferens during the procedure."
"Each vas in the circulatory system plays a specific role in fluid transport."