vas : Idioms & Phrases

• noun a duct that carries spermatozoa from the epididymis to the ejaculatory duct
  ductus deferens.
  

WordNet

• ; pl. Vasa deferentia. L. vas vessel + deferens carrying down. (Anat.) The excretory duct of a testicle; a spermatic duct.

Webster 1913

• noun several small arteries branching off of the splenic artery and going to the greater curvature of the stomach
  short gastric artery; arteria gastrica breves.
  

WordNet

• noun the several highly convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis
  

WordNet

• noun any small blood vessel ramifying on the outside of a major artery or vein
  

WordNet