Language: Old English
Origin: cranc


1 noun
crank1 [countable]
1DT a handle on a piece of equipment, that you can turn in order to move something
2 informal someone who has unusual ideas and behaves strangely:
Zoff was originally dismissed as a crank, but his theories later became very influential.

crank call/letter

a telephone call or letter in which someone says annoying things
4 American English informal someone who easily gets angry or annoyed with people

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