Noun. 1. vas deferens-a duct that carries spermatozoa from the epididymis to the ejaculatory duct. ductus deferens.
Judge Advocate General of the Navy. The Judge Advocate General of the Navy (JAG) is the highest-ranking uniformed lawyer in the United States Department of the Navy. The Judge Advocate General is the principal advisor to the Secretary of the Navy and the Chief of Naval Operations on legal matters pertaining to the Navy.
, Navy JAG Commander, retired. Affiliation with the Navy Reserve JAG corps requires prior active duty JAG experience. There are generally no direct accessions. Every JAG must be a member in good standing of at least one U.S. state bar.