- arm of Lake Michigan, extending into NE Wis.: c. 100 mi (161 km) long
- city & port in Wis., on this bay: pop. 102,000
Origin of Green Baytranslated, translation of French Baie Verte
A city of eastern Wisconsin at the mouth of the Fox River on Green Bay, an arm of Lake Michigan. Founded as a trading post in 1634, the city grew in the mid-1800s as a port and industrial center.