An expression used to refer to either
1: an individual who does not belong to any particular faith
2: an individual who belongs to a certain type of faith that has multiple subgroups in it, like Christianity, but is not currently committed to attending services from any particular church ran by a specific faith
Danny is religiously homeless for while he identifies as being a Hindu, but is not currently attending any temple ran by any of the specific religious groups that are part of that faith.