Is “Throwback” a Scrabble word?
Yes
THROWBACK
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 Throwback
/ˈθɹəʊ.bæk/
noun
1.A reversion to an earlier stage of development.
2.A person considered to be primitive, uncivilized and mentally deficient.
3.An organism that has characteristics of a more primitive form.