vas

1. (anatomy) A vessel or duct transporting any bodily fluid, such as blood, lymph, chyle, or semen.

2. (colloquial, specifically) The vas deferens.Examples: "The vesiculæ are bound down, or fixed, by the vesical fascia. They are about two inches long, and, at the broadest part, which is the middle, they are from five to seven-eighths of an inch broad. They are close by the outside of the vasa, and their extremities are two inches and a half distant, for they divaricate. At the gland they approach, but have the vasa deferentia interposed, so that they do not meet."colloquialspecifically