(n) something that bulges out or is protuberant or projects from its surroundings, Syn. excrescence, protuberance, prominence, hump, swelling, gibbousness, extrusion, bump, protrusion, gibbosity, jut, Example:the gun in his pocket made an obvious bulge; the hump of a camel; he stood on the rocky prominence; the occipital protuberance was well developed; the bony excrescence between its horns