geek

Meanings

1. 1
   noun

   an enthusiast obsessively devoted to a niche interest

   As a computer geek, she spent weekends building her own server.

A variant of dialectal 'geck' ('fool, simpleton'), from Low German 'geck' or Dutch 'gek' ('fool, mad'); originally a circus performer who bit heads off live animals, later an obsessive enthusiast.

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