Coastal City is a term used to describe a city located on the coast of a body of water, such as an ocean, sea, or lake. The two crossword solutions for this term are PORT (4 letters) and SEAPORT (7 letters). A PORT is a location on a coast or shore containing one or more harbors where ships can dock and transfer people or cargo to or from land. A SEAPORT is a PORT that is used for international trade and is usually larger than a regular PORT.