Is “Seamark” a Scrabble word?
Yes
SEAMARK
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 Seamark
noun
1.Any elevated object on land which serves as a guide to mariners, such as a hill or steeple.
2.A beacon, buoy, etc. placed in the sea to aid navigation.