retrocuspid papilla

[rĕt′rō-kŭspĭd]
n.
  1. A small tag of tissue on the mandibular gums, lingual to the cuspid teeth, usually bilateral and is considered a normal anatomic structure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.