The term 'secondary road' refers to a type of road that is not part of the main highway system. It is usually a smaller, less-traveled road that connects two larger roads or highways. The two crossword solutions for this term are 'FEEDER' (6 letters) and 'BYWAY' (5 letters). A FEEDER is a secondary road that connects to a major highway, while a BYWAY is a scenic secondary road that is often used for recreational purposes.