noun, masculine/ˈostɾo/plural: ostros
south wind; south
Synonyms: ostro, sur
Antonyms: norte, septentrión
Etymology tree Proto-Indo-European *h₂ews- Proto-Indo-European *-s Proto-Indo-European *h₂éwss? Proto-Indo-European *-teros Proto-Indo-European *h₂éwsteros Proto-Italic *austeros Latin austrum Spanish ostro Inherited from Latin austrum.