A bulge, knob, swelling, spine or anything that protrudes. (noun)
Examples of word protuberance
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.
L The age of the dag is known by its horns: the firft year exhibits only a dmrt protuberance, which is covered with a hairy ftin; tk next year the horns are diaight and dngle; the third year producd two antlers, the fourth three, the fifth four j and, when, arrived at the fixth year, the antlers amount to fix or feven on, each fide, bal the number is not always certain,.
That protuberance which is next the tip holds it on.