A vessel or duct in the body that carries fluids, such as the vas deferens which carries sperm in the male reproductive system.
From Latin 'vas' (vessel, duct), the same root that gave English 'vase.' The word entered medical terminology directly from Latin and remains primarily used in anatomical and medical contexts.
The same Latin word 'vas' gives us both 'vase' (a decorative vessel) and 'vas deferens' (the biological vessel)—showing how the Romans had a word for any kind of container, from art to anatomy.
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