Is “Earthwork” a Scrabble word?
Yes
EARTHWORK
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 Earthwork
/ˈɜːθwɜːk/
noun
1.Any structure made from earth; especially an embankment or rampart used as a fortification.