The term 'PART OF A ROOF' can be broken down into two crossword solutions: EAVE (4 letters) and RIDGE (5 letters). An EAVE is the lower edge of a roof that projects beyond the side of a building, while a RIDGE is the highest point of a roof, running along the length of the building. Both EAVE and RIDGE are important components of a roof, as they provide protection from the elements and help to keep the structure of the roof intact.