This is the 3975th most frequent Spanish word.
barbastro
"Barbastro" is a proper noun referring to a town in the Huesca province of Spain, not a dictionary word with a translatable definition.
The word 'Barbastro' is used here as a proper noun, naming the geographical location of a city.
Barbastro es una ciudad en la provincia de Huesca.
Barbastro is a city in the province of Huesca.
'Barbastro' is used to denote the origin of the wine, associating the city's name with a specific product attribute.
El vino de Barbastro es reconocido por su calidad.
The wine from Barbastro is recognized for its quality.
Here, 'Barbastro' is used again as a proper noun to specify the location visited by the speaker.