Is “Scupper” a Scrabble word?
Yes
SCUPPER
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 Scupper
noun
1.A drainage hole on the deck of a ship.
2.A similar opening in a wall or parapet that allows water to drain from a roof.