any person (almost always male) with an obsessive or excessively enthusiastic interest, particularly one involving the collection of supposedly trivial information or ephemera e.g. model trains, stamps, computers, Internet; Eddie Stobart lorry names!! (you know the type).
ANORACH
Meaning of ANORACH in English
Raynet Business and Marketing English glossary. Английский глоссарий компании Raynet Business and Marketing . 2012