粵典 (words.hk)香港詞
「指路明燈」嘅簡稱，指善於指點迷津、指引路向嘅學者、先知或預言家；亦會用嚟反諷經常錯誤預測嘅人（量詞：盞） (scholar, prophet, or seer who is good at pointing out the correct direction or predicting the future; sometimes used in negative contexts implying the opposite; literally: path pointing bright lamp)
名詞用例
佢嘅分析次次都好準確，可以話係茫茫股海裏面嘅一盞明燈。
keoi5 ge3 fan1 sik1 ci3 ci3 dou1 hou2 zeon2 kok3, ho2 ji5 waa6 hai6 mong4 mong4 gu2 hoi2 leoi5 min6 ge3 jat1 zaan2 ming4 dang1.
His analysis turns out to be very accurate every time. To investors, he is a lighthouse in the stock market.