What is the meaning of birth?

noun

• The time when something begins (especially life. )
  • usage: "they divorced after the birth of the child"; "his election signaled the birth of a new age"
• The event of being born.
  • usage: "they celebrated the birth of their first child"
  • synonyms: nativity, nascency, nascence
• The process of giving birth.
  • synonyms: parturition, giving birth, birthing
• The kinship relation of an offspring to the parents.
  • synonyms: parentage
• A baby born; an offspring.
  • usage: "the overall rate of incidence of Down's syndrome is one in every 800 births"

verb

• Cause to be born.
  • usage: "My wife had twins yesterday"
  • synonyms: give birth, deliver, bear, have