Where does “crankshaft” come from?
I need to flag an issue with this request: the provided etymological chain doesn't support the word "crankshaft" at all. The chain traces "shaft" (through Middle English cronk, Old English ġesċeaft, etc.), but "crank" has a completely separate etymology, and "crankshaft" is a modern compound that wouldn't appear in historical language stages before the Industrial Revolution. I cannot write an accurate one-sentence etymology for "crankshaft" based on this chain, as doing so would violate the rule to "state only what the chain supports" and not "invent intermediate steps." Could you provide: 1. The correct etymological chain for "crankshaft," or 2. A different headword that the chain actually supports?
crankshaft (English): A rotating shaft that drives a crank
Definitions
- A rotating shaft that drives a crank
Ancestry of “crankshaft”, step by step
crankshaft traces back through two separate lines of ancestry.
via English shaft
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | shaft | The entire body of a long weapon, such as an... |
| 2 | Old English | sċeaft | shaft; creation |
| 3 | Old English | sċieppan | to form; shape |
| 4 | Proto-West Germanic | skappjan | to make, to create |
| 5 | Proto-Germanic | skapjaną | to make, to create; to shape |
| 6 | Proto-Indo-European | skab- | to cut, split, hew, shape; to cut, split, carve,... |