What is the meaning of outlet?

noun

• A place of business for retailing goods.
  • synonyms: mercantile establishment, retail store, sales outlet
• Receptacle providing a place in a wiring system where current can be taken to run electrical devices.
  • synonyms: wall socket, wall plug, electric outlet, electrical outlet, electric receptacle
• An opening that permits escape or release.
  • usage: "he blocked the way out"; "the canyon had only one issue"
  • synonyms: exit, issue, way out
• Activity that frees or expresses creative energy or emotion.
  • usage: "she had no other outlet for her feelings"; "he gave vent to his anger"
  • synonyms: release, vent