The German name for Cologne is 'Koln', which is a four letter word. Cologne is a city in Germany located on the Rhine River and is the fourth largest city in the country. It is known for its historical sites, such as the Cologne Cathedral, and its vibrant culture. The city is also home to many museums, galleries, and other attractions. The German name for Cologne is 'Koln', which is derived from the Latin name 'Colonia'.