Where does “carril” come from?
carril (Catalan) comes from Vulgar Latin carrilis, from Latin currīlis, from Latin currus, from Proto-Italic korzos, from Proto-Indo-European ḱr̥sós, from Proto-Indo-European ḱers- — to run.
carril (Catalan): lane, track; rail
Ancestry of “carril”, step by step
Words derived from “carril”