intervertebral foramen

n.
  1. Any of the openings into the vertebral canal bounded by the pedicles of adjacent vertebrae above and below, the vertebral bodies in front, and the articular processes behind.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.