Is “Sundeck” a Scrabble word?
Yes
SUNDECK
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Sundeck
/ˈsʌnˌdɛk/
noun
1.An area on a ship's deck or on the roof of a house used for sunbathing.