Trainman
noun, plural trainmen.
1.
a member of the crew that operates a railroad train, usually an assistant to the conductor, such as a brakeman or flagman.
Read Also:
- Trainmaster  
noun 1. a person who has charge of operations over one portion of a railroad.
 - Train of thought  
A succession of connected ideas, a path of reasoning, as in You’ve interrupted my train of thought; now what was I saying? This idiom, which uses train in the sense of “an orderly sequence,” was first recorded in 1651, in philosopher Thomas Hobbes’s Leviathan.
 - Trainshed  
noun 1. (in a railroad station) a shelter completely covering railroad tracks and their adjoining platforms.
 - Trainsick  
adjective 1. ill with train sickness.
 - Train-sickness  
noun 1. nausea and dizziness, sometimes accompanied by vomiting, resulting from the motion of the train in which one is traveling.
 
