noun (n)

• a building or place that provides a particular service or is used for a particular industry(noun.artifact)

  Example:
  The assembly plant is an enormous facility.
  

  Synonym:
  installation
  

  source: wordnet30
• skillful performance or ability without difficulty(noun.cognition)

  Example:
  He was famous for his facility as an archer.
  

  Synonym:
  adeptness, adroitness, deftness, quickness
  

  source: wordnet30
• a natural effortlessness(noun.attribute)

  Example:
  They conversed with great facility.
  

  Synonym:
  readiness
  

  source: wordnet30
• something designed and created to serve a particular function and to afford a particular convenience or service(noun.act)

  source: wordnet30
• a service that an organization or a piece of equipment offers you(noun.act)

  Example:
  A cell phone with internet facility.
  

  source: wordnet30
• The quality of being easily performed; freedom from difficulty; ease; as, the facility of an operation.(noun)

  source: webster1913