propeller head

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Alternative forms[edit]


propeller head (plural propeller heads)

A beanie with a propeller inspired the slang term
  1. The hub of a propeller
  2. The central part of a propeller, into which the blades fit
  3. (informal) A person deeply absorbed in an academic field or technical interest, especially to the exclusion of social activities.


  • (person absorbed in an academic field or technical interest): nerd