斗柄。拼音：dǒu bǐng。释义：指北斗七星中玉衡、开阳、摇光三星。在北斗七星中，第五至七颗星，排列成弧状，形如酒斗之柄，故称为「斗柄」。常年运转，古人即根据斗柄指向，来定时间和季节。
土木工程编译词汇A-22-SCIdict学术词典-... ... 悬臂 Arm，cantilever 斗柄 Arm，dipper 列车编组线 Arrangement track ...
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这条弧线由北斗的斗柄开始，沿著柄身的弧度，经过牧夫座的主星大角，最后到达室女座主星角宿一。
The curve stretches from the handle of the dipper to arcturus in bootes all the way down to spica in virgo.
值得注意的还有斗柄左数第二颗星“开阳”，它与临近的“开阳增一”是一对用于测试视力的肉眼可见双星系统。
Notable too in skygazing lore Mizar, second star from the left in the dipper's handle, forms a vision-testing visual double star with apparently close Alcor.
葫芦笙以小葫芦腹部为笙斗，柄端作吹口。
It takes the belly of the small calabash as its body and the pommel as its mouth.
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