extrusion

Noun

• squeezing out by applying pressure
  • an unexpected extrusion of toothpaste from the bottom of the tube
    
  • the expulsion of pus from the pimple
    

• something that bulges out or is protuberant or projects from its surroundings
  • 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