trainspotter

train +‎ spotter

trainspotter (plural trainspotters)

1. A person whose hobby is train spotting.
   • 2005, Sean Dooley, The Big Twitch, Sydney: Allen and Unwin, page 2:

     `So are you like one of those anorak wearing trainspotter types?'

   • 2021 July 28, Christian Wolmar, “Forgotten by the railways, but ripe for the exploring”, in RAIL, number 936, page 34:

     Above all, I remember the noise and smell of the steam locomotives, and it was those journeys that turned me into a trainspotter, which meant that soon a pencil, notebook and the Ian Allan locospotter's guide became essential items for the trip.

2. (by extension) An obsessive follower of any minority interest or hobby.

• trainspotting
• planespotter

• anorak
• ferroequinologist
• rivet counter