riell

1. (masculine) trickle
2. (masculine) bar (especially of metal), ingot
3. (masculine) rail

Pronounced as (IPA)

[riˈeʎ]

Etymology

Borrowed from Spanish: riel

In summary

From Latin rīvellus, diminutive of rīvus (“small stream”). In the “rail” sense a re-borrowing of Spanish riel.