dyer meaning
Freebase(0.00 / 0 votes)Rate this definition: Dyer. Dyer is a town in St. John Township, Lake County, Indiana, United States. The population was 16,390 at the 2010 census. This bedroom community lies in the Chicago Metropolitan Area. Dyer placed 97th on the 100 Best Places to Live in the US by CNN and Money Magazine in 2005.