trainman
noun
train·man ˈtrān-mən 
-ˌman
: a member of a train crew supervised by a conductor
Example Sentences
Recent Examples on the Web Old photos, calendars and portraits of depots and trainmen hang. 
Marc Bona, cleveland.com, 31 Aug. 2019 Above, trainman Gilbert Goegel removes a sign from the observation car. baltimoresun.com, 30 Apr. 2018 Jim has just been discharged from his job as a trainman on the BRT. Maureen Corrigan, WSJ, 15 Sep. 2017
Marc Bona, cleveland.com, 31 Aug. 2019 Above, trainman Gilbert Goegel removes a sign from the observation car. baltimoresun.com, 30 Apr. 2018 Jim has just been discharged from his job as a trainman on the BRT. Maureen Corrigan, WSJ, 15 Sep. 2017 Word History
First Known Use
1838, in the meaning defined above