| a lake in N Minnesota and SW Ontario, Canada, on the U.S.-Canadian border. 360 sq. mi. (932 sq. km). |
Rain·y Lake  (rā'nē)  A lake of northern Minnesota and southwest Ontario, Canada, drained by the Rainy River, which flows about 129 km (80 mi) generally westward along the U.S.-Canadian border to Lake of the Woods. |