Where does “railbound” come from?

railbound (English) comes from English rail, from Middle English rail, from Old English regol, from Latin rēgula, from Latin -ula, from Proto-Indo-European -tlom, from Proto-Indo-European -trom, from Proto-Indo-European -tḗr — Derives agent nouns from verbs, denoting someone...

railbound (English): confined to running on rails

Definitions

  1. confined to running on rails

Ancestry of “railbound”, step by step

railbound 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 bound

StepLanguageWordMeaning
1Englishboundsimple past tense and past participle of bind;...
2Middle EnglishboundAlternative form of band
3Middle EnglishbandThat which obstructs one's free will and free...
4Old Englishbendbond, chain, fetter, band, ribbon, ornament,...
5Proto-Germanicbandizband
6Proto-Indo-Europeanbʰendʰ-to bind; bond
Every word from Proto-Indo-European -tḗrEvery word from Latin -ulaEvery word from Latin rēgula