In bridge construction: designating a type of truss consisting of both vertical and diagonal elements, the latter (except for those at either end) all slanting downward towards the centre of the truss. Especially in "Pratt truss".

Of, relating to, or designating a type of cream-coloured earthenware (or items made of it) decorated typically in drab blue and green, brown, ochre, yellow, and orange, and produced in the late 18th and early 19th centuries by members of the Pratt family, or by other potters using this style.