youngest son of Henry II; King of England from 1199 to 1216; succeeded to the throne on the death of his brother Richard I; lost his French possessions; in 1215 John was compelled by the barons to sign the Magna Carta (1167-1216) • Syn: John, John Lackland • Instance Hypernyms: King of England, King of Great Britain • Member Holonyms: Plantagenet, Plantagenet line