noun an abnormal protuberance or localized enlargement.
— synonyms: puffiness, lump
noun something that bulges out or is protuberant or projects from its surroundings.
— synonyms: bulge, bump, hump, gibbosity, gibbousness, jut, prominence, protuberance
noun the increase in volume of certain substances when they are heated (often accompanied by release of water).
— synonyms: intumescence, intumescency
Examples
“Rains and dissolving snow swell the rivers in spring.”