This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A tendon.

n. Vigorous strength; muscular power.

n. The source or mainstay of vitality and strength. Often used in the plural: "Good company and good discourse are the very sinews of virtue” ( Izaak Walton).

v. To strengthen with or as if with sinews.

n. A cord or tendon of the body.

n. A nerve.

n. Muscle; nerve; nervous energy; vigor; vigorous strength; muscular power.

n. A string or chord, as of a musical instrument.

n. That which gives strength or in which strength consists; a supporting member or factor; mainstay; source of acquiring strength (often plural).

v. To knit together, or make strong with, or as if with, sinews.

n. A tendon or tendonous tissue. See Tendon.

n. Muscle; nerve.

n. Fig.: That which supplies strength or power.

v. To knit together, or make strong with, or as with, sinews.

n. A cord or tendon of the body. See tendon.

n. A nerve. Compare aponeurosis.

n. Hence Figuratively, muscle; nerve; nervous energy; strength.

n. A string or chord, as of a musical instrument.

n. That which gives strength or in which strength consists; a supporting member or factor; a mainstay.

To furnish with sinews; strengthen as by sinews; make robust; harden; steel.

To serve as sinews of; be the support or mainstay of.

To knit or bind strongly; join firmly.

n. a cord or band of inelastic tissue connecting a muscle with its bony attachment

n. possessing muscular strength

"He preaches what he calls the sinew and bone of doctrine, and he is very stern in the pulpit."

sinewed    sinewing    sinews   

strength   

sinew-backed bow    sinews of war   

tendon   

sinewed    sinewing    sinewy   

muscle    nerve    ligament    strength   

tendon    gristle    cartilage    marrow    muscle    gut    spine    musculature    brawn    hide