The term 'roof-beam' is used to describe the structural components of a roof. The two crossword solutions for this term are 'TRUSS' (5 letters) and 'RAFTER' (6 letters). A TRUSS is a triangular frame that is used to support the weight of a roof, while a RAFTER is a sloped beam that runs from the ridge of the roof to the eaves. Both trusses and rafters are essential components of a roof-beam, providing strength and stability to the structure.