a marsh in ancient times; in today's Shandong Province; betweem Heze and Yun Cheng
㵢【巳集上】【水部】 康熙筆画:17画,部外筆画:13画
《玉篇》力堆切《集韻》盧回切,音靁。澤名。通作雷。○按雷澤,地在城陽。