HIPS
, in Architecture, are those pieces of timber placed at the corners of a roof. These are much longer than the rafters, because of their oblique position.
Hip means also the angle formed by two parts of the roof, when it rises outwards.
Hip-Roof, called also Italian Roof, is one in which two parts of the roof meet in an angle, rising outwards: the same angle being called a valley when it sinks inwards.