pharyngeal bursa

n.

A cystic remnant of the notochord sometimes found in the posterior wall of the nasopharynx at the lower end of the pharyngeal tonsil.Luschka's bursa
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.