Something, such as a bulge, knob, or swelling, that protrudes.(noun)
The condition of being protuberant.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "protuberance" in a sentence
"He's quite round in the shoulders; and yet so inconsistent are women that she calls a protuberance that resembles the letter C the line of beauty."
"I guess a speed bump could be described as a protuberance?"
"The interior of the protuberance, which is the fruiting part of the fungus, contains numerous black, flask-like structures whose tips reached the surface."