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.
NCIS Episode 0. Navy NCIS: The Beginning. Episode Summary. The cross-over that aired few weeks after the show's premiere, was aired as a JAG episode, but also a pilot titled Navy NCIS: The Beginning. The episode is a 1-hour combination of two episodes that aired as JAG, Ice Queen (1) and Meltdown (2).