= P =
propeller head n.
Used by hackers, this is syn. with
geek. Non-hackers sometimes use it to describe all
techies. Prob. derives from SF fandom's tradition (originally
invented by old-time fan Ray Faraday Nelson) of propeller beanies
as fannish insignia (though nobody actually wears them except as a
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.