What is the meaning of expedition?

noun

• A military campaign designed to achieve a specific objective in a foreign country.
  • synonyms: military expedition, hostile expedition
• An organized group of people undertaking a journey for a particular purpose.
  • usage: "an expedition was sent to explore Mars"
• A journey organized for a particular purpose.
• A journey taken for pleasure.
  • usage: "many summer excursions to the shore"; "it was merely a pleasure trip"; "after cautious sashays into the field"
  • synonyms: excursion, jaunt, outing, junket, pleasure trip, sashay
• The property of being prompt and efficient.
  • usage: "it was done with dispatch"
  • synonyms: dispatch, despatch, expeditiousness