houille

== French == === Etymology === From Old Walloon (Liégeois) hulhes ( > modern Wallon hoye), probably from Frankish *hukila (“pile, mound”), a diminutive form (compare dialectal Dutch heukel), ultimately from Proto-Indo-European *kewp- (“to arch, bend, curve, vault”), see also Proto-Germanic *huppōną (“to hop”), *hufą (“elevated place”). === Pronunciation === (aspirated h) IPA(key): /uj/ === Noun === houille f (plural houilles) stone coal, mineral coal ==== Derived terms ==== gaz de houille ==== Descendants ==== → Galician: hulla → Portuguese: hulha → Romanian: huilă → Spanish: hulla ==== See also ==== charbon === References === === Further reading === “houille”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012