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Propeller head
noun, slang
Definitions
Noun
- 1 The hub of a propeller, into which the blades fit.
- 2 A person deeply absorbed in an academic field or technical interest, especially to the exclusion of social activities. derogatory, slang
Etymology
In reference to people, exemplified by the kind of child who wore a propeller beanie.
See also for "propeller head"
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