sun deck From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounAn area on a ship's deck or on the roof of a house used for sunbathing. Related wordsSynonymssundeckweatherdeckmain-deckspar decksunloungershelter deckdeckchairforedeckweather deckdeck-chairabovedeckupper deckdecktopquarter-deckpoopdeckwell deck References Wiktionary — sun deck Wikipedia — sun deck