English: The arms were granted on July 19, 1937. The green field is canting (Gronau comes from Grüne Aue, or green field). The wavy bend symbolises the Dinkel river that runs through the city. The swan is derived from the arms of the Lords of Steinfurt, as the city historically was a possession of the Lords of Steinfurt until 1699. The gold and red colours are derived from the arms of Münster, as the city was acquired by the Bishops of Münster in 1699.