Cowper, William Syllabification: (Cow·per, William)Pronunciation: /ˈko͞opər, ˈko͝opər, ˈkoupər/Definition of Cowper, William (1731–1800), English poet, noted for the poem The Task (1785) and for the comic ballad John Gilpin (1782). Cowper, William in other Oxford dictionaries Definition of Cowper, William in the British & World English dictionary