Is “Swayback” a Scrabble word?
Yes
SWAYBACK
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 Swayback
noun
1.An excessive sagging of the spine of a quadruped animal, especially a horse.
2.An animal with such excessive sagging.