adjective/uˈʝeɾo/
bituminous coal
Etymology tree Spanish hulla Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -ārius Spanish -ero Spanish hullero From hulla + -ero.
/uˈʝeɾo/
bituminous coal
Etymology tree Spanish hulla Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -ārius Spanish -ero Spanish hullero From hulla + -ero.