something that has been picked up (e.g. from the street)
, a semba bilokota
is someone who picks up things that
others have thrown away and for who they still have value (tu use, sell, recycle,...)
a rag-and-bone man
in the context of relations
, it's used for someone who takes over a boyfriend or
girlfriend that someone else has rejected or abandoned.
in the context of church
, it's used for God, because He picks up those who are
rejected or abandoned and gives them value and a new life.