condylar emissary vein

n.
  1. A vein that connects the sigmoid sinus and the venous plexuses surrounding the vertebral processes and vertebral bodies through the condylar canal of the occipital bone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.