Is “Knuckle” a Scrabble word?
Yes
KNUCKLE
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 Knuckle
/ˈnʌkəl/
noun
1.Any of the joints between the phalanges of the fingers.
2.(by extension) A mechanical joint.
3.A cut of meat.
verb
1.To apply pressure, or rub or massage with one's knuckles.
“He knuckled the sleep from his eyes.”
2.To bend the fingers.
3.To touch one's forehead as a mark of respect.
Synonyms: knuckle under