Langland, William Syllabification: (Lang·land, William)Pronunciation: /ˈlaNGlənd/Definition of Langland, William (circa 1330-circa 1400), English poet. He is best known for Piers Plowman (circa 1367–70), a long allegorical poem that is in the form of a spiritual pilgrimage. Langland, William in other Oxford dictionaries Definition of Langland, William in the British & World English dictionary