Sin"ew*y (?), a.
1.
Pertaining to, consisting of, or resembling, a sinew or sinews.
The sinewy thread my brain lets fall.
Donne.
2.
Well braced with, or as if with, sinews; nervous; vigorous; strong; firm; tough; as, the sinewy Ajax.
A man whose words . . . were so close and sinewy.
Hare.
© Webster 1913.