What is the meaning of synchronise?

verb

• Happen at the same time.
  • synonyms: synchronize, contemporize, contemporise
• Make (motion picture sound) exactly simultaneous with the action.
  • usage: "synchronize this film"
  • synonyms: synchronize
• Arrange or represent events so that they co-occur.
  • usage: "synchronize biblical events"
  • synonyms: synchronize, contemporize, contemporise
• Operate simultaneously.
  • usage: "The clocks synchronize"
  • synonyms: synchronize
• Cause to indicate the same time or rate.
  • usage: "synchronize your watches"
  • synonyms: synchronize
• Make synchronous and adjust in time or manner.
  • usage: "Let's synchronize our efforts"
  • synonyms: synchronize, sync