What is the meaning of burst forth?

verb

• Jump out from a hiding place and surprise (someone. )
  • usage: "The attackers leapt out from the bushes"
  • synonyms: leap out, rush out, sally out
• Be unleashed; emerge with violence or noise.
  • usage: "His anger exploded"
  • synonyms: explode, break loose
• Come into or as if into flower.
  • usage: "These manifestations effloresced in the past"
  • synonyms: effloresce