protrusion

详细解释:n. 突出, 突出部, 露出
【医】 前突, 突出

英语解释：

名词 protrusion:

something that bulges out or is protuberant or projects from its surroundings同义词：bulge, bump, hump, gibbosity, gibbousness, jut, prominence, protuberance, extrusion, excrescence