Is “Rath” a Scrabble word?
Yes
RATH
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 Rath
/ɹɑːθ/
noun
1.A walled enclosure, especially in Ireland; a ringfort built sometime between the Iron Age and the Viking Age.