birth celebration; celebration of a birth
Refers to the event or custom of celebrating a birth, typically held about one month after the baby is born.
I was invited to a friend's birth celebration.
baby gift; gift for a new baby; push present
A gift given to celebrate the birth of a child. Often money, baby clothes, or toys. 'Push present' is a colloquial English equivalent but not a direct cultural match.
I gave baby clothes as a gift for the new baby.
Compound of 出産 (shussan, 'childbirth') and 祝い (iwai, 'celebration, gift').