The Vision of Piers Plowman is a leading work of medieval English literature on a par with Chaucer's The Canterbury Tales. An A-, B-, C- and Z-text are extant, with this version based on the B-text. All the vocabulary in the B-text has been presented systematically, illuminating the complex allegorical realm of this work of literature in more detail than ever. Parts of speech, and the definitions and etymology of words, have been provided for each heading, forming a foundation for linguistic study via reference to aids such as the Oxford English Dictionary and Middle English Dictionary. An essential reference for any study of medieval English literature, history of the English language, ideas in medieval English society, or Christian literature.