English
trainmaster
From train + master.
Proto-Indo-European *dʰregʰ- ‘to run, to drag, to pull’
Latin trahere
Vulgar Latin *tragīnāre ‘to drag, to pull, to trail’
Old French traïner ‘to drag’
Old French train
Middle English trayne
English train
Proto-Indo-European *meǵh₂- ‘big’
Proto-Italic *magisteros ‘bigger, greater’
Latin magister ‘master, chief, head, superior, director, president, leader, commander, conductor’
Old English mǣġester ‘master’
Middle English maister ‘master’
English master
Today it means
noun A superintendent or supervisor of a freight railroad, responsible for train movements, crew assignments, derailments and more.
Language periods are conventional ranges, not dates for this word.
Etymograph / trainmaster