The term EDGE OF A ROAD can be broken down into two crossword solutions: KERBSIDE (8 letters) and WAYSIDE (7 letters). KERBSIDE refers to the edge of a road that is closest to the sidewalk or curb, while WAYSIDE refers to the edge of a road that is furthest away from the sidewalk or curb. Both terms are used to describe the sides of a road, with KERBSIDE being the side closest to the sidewalk and WAYSIDE being the side furthest away.