1. The front part of a building that faces the street: The frontage of the company was designed by a famous architect.
2. The property next to a body of water: Jack loved to walk along the frontage and breathe in the ocean air.
3. The piece of land between a road and a piece of property: There were a lot of weeds growing on the frontage next to Tom's estate.
4. The extent of land along a road: The frontage was measured along High Park Avenue the previous day.

A road that parallels a larger highway and provides access to communities, stores, etc.

Frontage or service roads limit the number of entrance and exit points onto a major roadway, reducing conflicts and improving safety.