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.
See also other military law journals & reviews. 1  See also other Joint, Air Force, Army, Navy, and Marine Pubs. 2  The Military Commander and the Law, from the Air Force JAG School. 3  AF Departmental Publications, Series 51, Law Pubs, bunch of 'em AFPD 51-2, Administration of Military Justice. AFPD 51-7, International Law.