水流柴

隨水流飄浮嘅木頭，喺岸邊同船上嘅人會執嚟晒乾當柴用 (pieces of wood flowing on water, the people live by the shore or on boat would pick them up and sun dry them to use as fuel)

引申義：指長年住喺舢板上嘅水上人，係一種貶稱，意思係無家無業，無田無產，好似水上嘅柴片一樣到處漂流 (extended meaning : a derogative calling of the Boat People, means they have no house and occupation, no property and farm, just like a piece of wood flowing everywhere on the water.)

引申義：生命中嘅過客，萍水相逢 (the passers-by of one's life like pieces of wood flowing on water)

江河里漂流下来的木柴。

比喻到处流浪的盲流人员。

比喻外地到本地落户的人员。