Limbo is a masculine noun with Latin origin limbus and what does it mean margin, border, edge, edge.
Within the scope of astronomy, limb is the outer part of a celestial body, whose margin is visible, for example: limb of the Sun or Moon. At botany, the limb is the enlarged part of a leaf or calyx segment.
In a figurative sense, limbo means a place where worthless things are left behind and forgotten. Ex: She never called me again, it feels like I fell into limbo.
limbo and religion
In the Catholic religion, limbo is a place where children who died without being baptized went. According to an ancient doctrine of the Catholic Church, these children did not go to Heaven because they did not have baptismal grace, but they also did not go to Hell because they had no personal sin.
The concept of limbo only emerged from the thirteenth century, and before that, some figures in the Catholic Church, such as St. Augustine claimed that such children would go to hell. In the Middle Ages, the expression limbus infantum referred to children, while limbus patrum referred to saints who had been born before Christ.
Although it was never really considered a church dogma, limbo was abolished in 2007. Today, the Catholic Church has a position similar to evangelical denominations, which claim that children who die before reaching the age of reason go to Heaven.