What is the meaning of blossom?

noun

• Reproductive organ of angiosperm plants especially one having showy or colorful parts.
  • synonyms: flower, bloom
• The period of greatest prosperity or productivity.
  • synonyms: flower, prime, peak, heyday, bloom, efflorescence, flush

verb

• Produce or yield flowers.
  • usage: "The cherry tree bloomed"
  • synonyms: bloom, flower
• Develop or come to a promising stage.
  • usage: "Youth blossomed into maturity"
  • synonyms: blossom out, blossom forth, unfold