The part of the leg between the knee and ankle, or the long narrow part connecting two ends of an object.
From Old English 'scanca' meaning leg bone. Extended to mean any long, narrow connecting part of tools or objects due to resemblance to the leg's straight section.
The shank is the workhorse part of both anatomy and tools - it's the unsung connector that transfers power from source to destination, whether in your leg or your drill bit.
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