Is “Dasher” a Scrabble word?
Yes
DASHER
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 Dasher
/ˈdæʃə(ɹ)/
noun
1.A person who dashes; a fast runner.
2.That which dashes or agitates.
“the dasher of a churn”
3.A dashboard or splashboard.