It crouched there, a tightly wound spring scanning the horizon for prey, all lean muscle, tense sinews against the roiling clouds.

BBC: The Serengeti in the off-season

The sinews bulged out of his neck like webbing, and, as he inhaled, the air burned through his chest and lungs.

NEWYORKER: The Elephant

Sinews of movement spin off from the main clutch yet remain connected elastically by tendrils that eventually snap them gracefully back to the fold.

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Gordon Brown, whom many Tories authentically despise, has helped to stiffen their sinews, and to remind them that they have an enemy besides each other.

ECONOMIST: Bagehot

But this Middle East policy will be undermined unless we restore the three sinews of our influence: our economic strength, our military strength and the strength of our values.

WSJ: Mitt Romney: A New Course for the Middle East

More than a mere matter of building roads and bridges and increasing access to cheap energy, the WPA was about restoring a collective spirit, a shared stake, in constructing the sinews of a more competitive, prosperous country.

FORBES: New Geographer

These are the sinews of the mind.

FORBES: Armstrong and Te'O--True Sparrows Or Fake Eagles

Henry races around its perimeter, stomping at the edges of the calamity, marking its increasing size with each pass, and he begins to feel the exertion in his chest, feels the sinews tightening like bootlaces woven through his ribs.

NPR: Excerpt: 'Woodsburner'