noun (n)

• a central point or locus of an infection in an organism(noun.state)

  Synonym:
  focal point, focus
  

  source: wordnet30
• a nest in which spiders or insects deposit their eggs(noun.object)

  source: wordnet30
• A nest: a repository for the eggs of birds, insects, etc.; a breeding place; esp., the place or substance where parasites or the germs of a disease effect lodgment or are developed.(noun)

  source: webster1913