Where does “trenaj” come from?

trenaj (Romanian) comes from French trainage, from English train, from Middle English train, from Old French train, from Old French traïner, from Vulgar Latin traginare, from Latin tragēre, from Latin trahere — to run.

Ancestry of “trenaj”, step by step

StepLanguageWordMeaning
1Frenchtrainagepulling, dragging
2EnglishtrainElongated portion; Connected sequence of people...
3Middle Englishtrain
4Old Frenchtraina delay, a drawing out
5Old FrenchtraïnerAlternative form of trainer; to pull out, to draw
6Vulgar Latintraginarepresent active infinitive of *traginō
7Latintragēre
8Latintraheresecond-person singular future passive indicative...
9LatintrahoI drag, pull; I trail; I extract, withdraw
10Proto-Italictraɣō
11Proto-Indo-Europeantregʰ-to drag, pull?; to run, walk
12Proto-Indo-Europeandʰregʰ-to run
Every word from Proto-Indo-European dʰregʰ-