What is the meaning of carry on?

verb

• Direct the course of; manage or control.
  • usage: "You cannot conduct business like this"
  • synonyms: conduct, deal
• Keep or maintain in unaltered condition; cause to remain or last.
  • usage: "preserve the peace in the family"; "continue the family tradition"; "Carry on the old traditions"
  • synonyms: continue, uphold, bear on, preserve
• Continue talking.
  • usage: "I know it's hard" he continued, "but there is no choice"; "carry on-pretend we are not in the room"
  • synonyms: continue, go on, proceed
• Misbehave badly; act in a silly or improper way.
  • usage: "The children acted up when they were not bored"
  • synonyms: act up