1959 (train spotter attested from 1958), chiefly British English, in reference to the hobby of recording the numbers of the locomotives one has observed; see train (n.) in the railroad sense + spot (v.).
Examples from the Web for trainspotting Contemporary Examples of trainspotting
Then, he singled out Pulp Fiction and Trainspotting as “glorifying” drug use.
October 19, 2014
Trainspotting had to be reedited and partially redubbed for its American release back in 1996.
October 1, 2013