What is the meaning of swelling?

noun

• An abnormal protuberance or localized enlargement.
  • synonyms: puffiness, lump
• Something that bulges out or is protuberant or projects from its surroundings.
  • usage: "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"
  • synonyms: bulge, bump, hump, gibbosity, gibbousness, jut, prominence, protuberance, protrusion, extrusion, excrescence
• The increase in volume of certain substances when they are heated (often accompanied by release of water.
  • synonyms: intumescence, intumescency

verb

• Increase in size, magnitude, number, or intensity.
  • usage: "The music swelled to a crescendo"
  • synonyms: swell
• Become filled with pride, arrogance, or anger.
  • usage: "The mother was swelling with importance when she spoke of her son"
  • synonyms: swell, puff up
• Expand abnormally.
  • usage: "The bellies of the starving children are swelling"
  • synonyms: swell, swell up, intumesce, tumefy, tumesce
• Come up (as of feelings and thoughts, or other ephemeral things. )
  • usage: "Strong emotions welled up"; "Smoke swelled from it"
  • synonyms: well up, swell
• Come up, as of a liquid.
  • usage: "Tears well in her eyes"; "the currents well up"
  • synonyms: well, swell
• Cause to become swollen.
  • usage: "The water swells the wood"
  • synonyms: swell