Definition of "Birth" :
noun: the event of being born
"They celebrated the birth of their first child."
noun: a baby born; an offspring
"The overall rate of incidence of Down's syndrome is one in every 800 births."
noun: the process of giving birth
noun: the kinship relation of an offspring to the parents
noun: the time when something begins (especially life)
"They divorced after the birth of the child."
verb: cause to be born