noun.
A cord or tendon of the body.
noun.
A nerve.
noun.
Muscle; nerve; nervous energy; vigor; vigorous strength; muscular power.
noun.
A string or chord, as of a musical instrument.
noun.
That which gives strength or in which strength consists; a supporting member or factor; mainstay; source of acquiring strength (often plural).
verb.
To knit together, or make strong with, or as if with, sinews.