Word of the Day:

1 : tendon; especially : one dressed for use as a cord or thread

2 a : solid resilient strength : power

b : the chief supporting force : mainstay -- usually used in plural

"For at Trout-hall … there is usually an Angler that proves good company. And let me tell you, good company and good discourse are the very sinews of virtue." (Izaak Walton, The Compleat Angler, 1653)

More example sentences

Many parts of the body have come to have figurative meanings in English. One can have an eye for interior design, for example, or the stomach for a fight. "Muscle," of course, can mean "strength," and so can "sinew," a word for the tissue that ties muscle to bone -- more commonly known as a tendon. (For a while, "sinew" also meant "nerve," but that usage is obsolete.) The use of "sinew" to mean "the chief supporting force" ties into its anatomical function as a stabilizing unit. "Sinew" derives via Middle English from Old English "seono"; it is also related to Old High German "senawa" ("sinew") and Sanskrit "syati" ("he binds").