What does "fester" mean?

Fester: To be inflamed; to grow virulent, or malignant; to grow in intensity; to rankle.

Additional senses

  1. 2.To cause to fester or rankle. For which I burnt in inward, swelt'ring hate, And fstered ranking malice in my breast. Marston.
  2. 3.A small sore which becomes inflamed and discharge corrupt matter; a pustule.
  3. 4.A festering or rankling. The fester of the chain their necks. I. Taylor.

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