(ˈdʊərəʊ) n, pl-ros (Currencies) the silver peso of Spain or Spanish America[from Spanish, shortened from peso duro hard peso, ultimately from Latin dūrus hard]
du•ro
(ˈdʊər oʊ)
n., pl. -ros. a former coin of Spain or Spanish America. [1825–35; < Sp, short for peso duro hard piastre]EncyclopediaSeeDura