Where does “railroad” come from?

Railroad derives from English road and English active, influenced by Middle French railler, Latin radiare, Latin radius meaning "spoke of a wheel," Latin rego, and Latin -ulus.

railroad (English): A permanent road consisting of fixed metal rails...

Definitions

  1. A permanent road consisting of fixed metal rails...

Ancestry of “railroad”, step by step

railroad traces back through two separate lines of ancestry.

via English rail

StepLanguageWordMeaning
1EnglishrailA horizontal bar extending between supports and...
2Middle Englishrail
3Old Englishregola rule; a ruler
4Latinrēgularule, bar
5Latin-ularegō + API → rēgula; tegō + API → tēgula;...
6Proto-Indo-European-tlomAlternative form of *-trom
7Proto-Indo-European-tromForms nouns denoting a tool or instrument
8Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via English road

StepLanguageWordMeaning
1EnglishroadA way used for travelling between places,...
2Middle EnglishrodeA cross or gibbet; The cross of Christ; The cross...
3Old Englishrādroad; riding, hostile incursion; riding, road
4Proto-West Germanicraiduriding, ride
5Proto-Germanicraidōride, journey; name of the R-rune
6Proto-Germanicrīdanąto ride
7Proto-Indo-Europeanrēydʰ-
8Proto-Indo-Europeanh₂er-to fit, to fix, to put together

Words derived from “railroad

Every word from Proto-Indo-European -tḗr
railroad — Etymology, Origin & Word History | Etymology Explorer