hórreo

granary (storehouse); an isolated, rectangular, wooden or rock building supported by columns, characteristic of the northwest of the Iberian peninsula and typically used to store grain or other agricultural produce

Inherited from Old Spanish orrio, from Latin horreum, from Ancient Greek ὡρεῖον (hōreîon). The standard form in modern Spanish, with /e/ rather than /j/, appears to be the result of a latinizing modification. Compare Asturian horriu, horru and Catalan orri.