The word "coastline" refers to the area where land and water meet, specifically the edge or boundary of a landmass that is next to a body of water like an ocean or a lake. Full definition
A healthy projected job growth over the next 10 years and 70 miles of coastline in the county make this beach city a delightful place for entrepreneurs to put down roots. (entrepreneur.com)
But I must say, sharing it with locals who have never experienced our beautiful coastline from the water has been even better. (flashinthepan.us)
That's enough to cover every foot of coastline in the world. (ecowatch.com)