0 someone who enjoys trainspotting (= watching trains and collecting their numbers) as a hobby: --
It was the result of a sick mind, and a trainspotter's mind, and a musician's mind.
The word's resonances were close to those of modern terms for individuals with obsessive interests in technical minutiae, such as nerd, trainspotter or anorak.
When a trainspotter sees a train that they have not yet seen before, it is referred to in the hobby as a cop.
It is a misconception that all railfans are trainspotters.
A trainspotter typically uses a data book listing the locomotives or equipment in question, in which locomotives seen are ticked off.
Do not exchange comments with a trainspotter.
I almost got the impression that while trainspotters have a—perhaps unwarranted—bad name, end of life vehicle spotters have an even worse one.
There's always a "trainspotter" element in any specialist field, and those people want to know every exact detail.