Is “Skewback” a Scrabble word?
Yes
SKEWBACK
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 Skewback
noun
1.The side of an arch; the course of masonry on the top of an abutment with a slope for the base of the arch to rest against.