Is “Gwyniad” a Scrabble word?
Yes
GWYNIAD
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 Gwyniad
/ˈɡwɪniːɑːɹd/
noun
1.A freshwater fish, Coregonus pennantii, native to Bala Lake in Wales.