hullero

== Spanish == === Etymology === From hulla +‎ -ero. === Pronunciation === Rhymes: -eɾo Syllabification: hu‧lle‧ro === Adjective === hullero (feminine hullera, masculine plural hulleros, feminine plural hulleras) (relational) bituminous coal === Further reading === “hullero”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025