A Shank

The part of the leg between the knee and the ankle.
Meat from that part of an animal.
(ornithology, colloquial) A redshank or greenshank, various species of Old World wading birds in the genus Tringa having distinctly colored legs.
A straight, narrow part of an object, such as a key or an anchor; shaft; stem.
The handle of a pair of shears, connecting the ride to the neck.
The center part of a fishhook between the eye and the hook, the 'hook' being the curved part that bends toward the point.
A protruding part of an object, by which it is or can be attached.
The metal part on a curb bit that falls below the mouthpiece, which length controls the severity of the leverage action of the bit, and to which the reins of the bridle are attached. Drill bit shank - Wikipedia
(sports) A poorly played golf shot in which the ball is struck by the part of the club head that connects to the shaft.
(slang) An improvised stabbing weapon; a shiv.
A loop forming an eye to a button. Shank (sewing) - Wikipedia
(architecture) The space between two channels of the Doric triglyph[18th century].
(metalworking) A large ladle for molten metal, fitted with long bars for handling it.
(printing, dated) The body of a type; between the shoulder and the foot.
(shoemaking) The part of the sole beneath the instep connecting the broader front part with the heel. Shank (footwear) - Wikipedia
Flat-nosed pliers, used by opticians for nipping off the edges of pieces of glass to make them round.
The end or remainder, particularly of a period of time.
The main part or beginning of a period of time.

Synonyms

(improvised stabbing weapon): shiv (slang)