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Definition of crank noun from the Oxford Advanced Learner's Dictionary

crank

noun
 
/kræŋk/
 
/kræŋk/
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  1. (disapproving) a person with ideas that other people find strange synonym eccentric
    • Vegans are no longer dismissed as cranks.
    • Everybody famous gets crank calls and letters.
  2. (North American English) a person who easily gets angry or annoyed
    • Everybody—apart from a few cranks like me—will be content.
  3. a bar and handle in the shape of an L that you pull or turn to produce movement in a machine, etc.Topics Engineeringc2
  4. Word Originnoun sense 3 Old English cranc (recorded in crancstæf, denoting a weaver's implement), related to crincan ‘bend, yield, fall in battle’, of Germanic origin .
See crank in the Oxford Advanced American Dictionary
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