Is “Ostmark” a Scrabble word?
Yes
OSTMARK
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 Ostmark
noun
1.The currency unit of the former German Democratic Republic (aka GDR, DDR, East Germany) until 1990, abbreviated DDM.