seashore Syllabification: (sea·shore)Pronunciation: /ˈsēˌSHôr/Translate seashore | into French | into German | into Italian | into Spanish Definition of seashore noun (usually the seashore) an area of sandy, stony, or rocky land bordering and level with the sea. Law the land between high- and low-water marks. seashore in other Oxford dictionaries Definition of seashore in the British & World English dictionary