ㄋㄢˊnánㄐㄧㄅㄛˋㄉㄡˇdǒu

  1. 北斗詩經·小雅·大東》:不可以簸揚不可以酒漿。」比喻徒有虛名實用魏書··》:國子學官教授兔絲燕麥南箕北斗!」

the Winnowing Basket in the southern sky, and the Big Dipper in the north (idiom)​; sth which, despite its name, is of no practical use