(a) The act of building a wall or walls; the act of raising defensive earthworks around a military encampment; ~ of bed, ?the attaching of a bed to a wall; ?the enclosing of a bed within an alcove; (b) a city wall; the wall of a building; also in fig. context [quot. c1400]; also, ?coll. premises, properties [last quot.]; desert wallingus, ruined walls or fortifications, ruins; the second ~, the area of ancient Jerusalem lying within the second wall, the Second Quarter; (c) ?material used for building walls.