粤典 (words.hk)香港词
七、八十年代大眾對#社會工作者 嘅比喻，代表佢哋為弱勢社群帶來光芒，為迷失者指引前路。源於當年無綫電視一套劇集《北斗星》 (figuratively: social workers, a term used in Hong Kong 1970-80's; literally: the Big Dipper)
名詞用例
近年社會貧富懸殊加劇，令更多年青人選擇入讀社工系，希望畢業後做北斗星幫助弱勢社群。
In recent years the wealth disparity of the society is becoming more serious, this has pushed more youth to select social work major in higher education, hoping to be social workers to help disadvantaged groups.