scoter Syllabification: (sco·ter)Pronunciation: /ˈskōtər/Definition of scoter noun (plural same or scoters) a northern diving duck that winters off the coast, the male of which has mainly black plumage. Genus Melanitta, family Anatidae: three species Origin: late 17th century: of unknown originscoter in other Oxford dictionaries Definition of scoter in the British & World English dictionary