Definition of duro in English:

duro

(also douro)

Pronunciation /ˈdʊərəʊ/ /ˈduːrəʊ/

noun

historical
  • In Spain and Spanish-speaking countries: a coin originally equivalent to eight reals and later to five pesetas; a Spanish dollar or piastre.

Origin

Late 18th century; earliest use found in Philip Thicknesse (1719–1792), travel writer. From Spanish duro, shortened from peso duro silver coin weighing one ounce from peso + duro hard.