The Neisse is a river tributary to the Oder, located in Central Europe. It is a 6-letter word and is a left-bank tributary of the Oder River, which it joins near the Polish town of Krosno Odrzańskie. The Neisse is approximately 200 km long and flows through the Czech Republic, Germany, and Poland. It is an important source of water for the region and is used for irrigation, hydroelectric power generation, and recreation.