Alabama /ˌæl.əˈbæm.ə/ noun4 •A state of the United States. Capital: Montgomery. Largest city: Birmingham. •A river in Alabama; flowing 318 miles from the confluence of the Tallapoosa and Coosa near Coosada until its confluence with the Tombigbee, forming the Mobile, near Calvert. •An indigenous Muscogee people of central Alabama. •A member of these people. formsAlabamas