Domesday \Domes"day`\, n. A day of judgment. See {Doomsday}. [Obs.] {Domesday Book}, the ancient record of the survey of most of the lands of England, made by order of William the Conqueror, about 1086. It consists of two volumes, a large folio and a quarto, and gives the proprietors' tenures, arable land, woodland, etc. [Written also {Doomsday Book}.]