(n.) A port on the seashore, or one accessible for seagoing vessels. Also used adjectively; as, a seaport town.

anchorage anchorage ground basin berth breakwater bulkhead dock dockage dockyard dry dock embankment groin harbor harborage haven jetty jutty landing landing place landing stage marina mole moorings pier port protected anchorage quay road roads roadstead seawall shipyard slip wharf