What is the meaning of juncture?

noun

• An event that occurs at a critical time.
  • usage: "at such junctures he always had an impulse to leave"; "it was needed only on special occasions"
  • synonyms: occasion
• A crisis situation or point in time when a critical decision must be made.
  • usage: "at that juncture he had no idea what to do"; "he must be made to realize that the company stands at a critical point"
  • synonyms: critical point, crossroads
• The shape or manner in which things come together and a connection is made.
  • synonyms: articulation, join, joint, junction