Delaware UK /ˈdɛləweə(ɹ)/US /ˈdɛləwɛɹ/ noun4 •The first state of the United States. Capital: Dover. Largest city: Wilmington. •A member of the Lenape people, the indigenous people of Lenapehoking, in what is now the Mid-Atlantic United States. •A river in the United States that flows from northeast Kansas into the Kansas River. •An American variety of grape, with compact bunches of small, sweet, amber-colored berries. formsDelawares