Is “Buttock” a Scrabble word?
Yes
BUTTOCK
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 Buttock
/ˈbɐtək/
noun
1.(usually in the plural) Each of the two large fleshy halves of the posterior part of the body between the base of the back, the perineum and the top of the legs.
2.The convexity of a ship behind, under the stern.
Synonyms: arsecheek, asscheek, bum-cheek, butt-cheek, cheek, ham