The word limbo comes from the Latin word limbus
which
means a border, a hem, or fringe around the edge of
a garment.
The term is associated in common parlance to mean
some
in-between state of being.
It is often associated, in a religious context, with
some state
of being in neither heaven nor hell, therefore on the fringe
of either. It has been used to refer to the abode for the dead
who were neither capable of committing deadly sin
(1 John 5:16) which excluded the soul from hell nor
were
baptized in water and the Holy Spirit (John 3:5)
which
excluded the soul from heaven.