A cruck or crook frame is a curved timber, one of a pair, which supports the roof of a building, used particularly in England. This type of timber framing consists of long, generally naturally curved, timber members that lean inwards and form the ridge of the roof. These posts are then generally secured by a horizontal beam which then forms an `A....
curved timber from ground to roof ridge to support the roof
One of paired curved timbers extending to ground in framework of house-roof
(in old English building) one of a pair of naturally curved timbers forming one of several rigid arched frames supporting the roof of a cottage or farm building.