esplanade

noun5

1. •
   Any clear, level space used for public walks or drives; especially, a terrace by the seaside.
2. •
   A grass plat; a lawn.
3. •
   Grassy strips between two divided highway lanes; a traffic island.
4. •
   A clear space between a citadel and the nearest houses of the town.
5. •
   The glacis of the counterscarp, or the slope of the parapet of the covered way toward the country.