Is “Sinew” a Scrabble word?
Yes
SINEW
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 Sinew
noun
1.A cord or tendon of the body.
2.A cord or string, particularly as of a musical instrument.
3.Muscular power, muscle; nerve, nervous energy; vigor, vigorous strength.
verb
1.To knit together or make strong with, or as if with, sinews.