tubercle
1. any small rounded nodule or elevation, esp on the skin, on a bone, or on a plant
2. any small rounded pathological lesion of the tissues, esp one characteristic of tuberculosis
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
tubercle
[′tü·bər·kəl] (biology)
A small knoblike prominence.
(metallurgy)
A mound of corrosive products on the surface of a metal that is subjected to local corrosive attack.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.