What does the word fester mean?

Usage examples for fester

  1. This is the great difficulty of training; for the wounds fester grievously, and months and sometimes years will elapse before an elephant will allow his feet to be touched without indications of alarm and anger. – Sketches of the Natural History of Ceylon by J. Emerson Tennent
  2. Sin, like every other disease, is sure, when it is driven onwards, to break out at a fresh point, or fester within some still more deadly, because more hidden and unsuspected, shape. – Sermons on National Subjects by Charles Kingsley
  3. But it is a pain that does not rankle and that does not fester like a sore that will not heal. – A Minstrel In France by Harry Lauder