som·bre·ro 
(sŏm-brârō, səm-)
(sŏm-brârō, səm-)n. pl. som·bre·ros
A large straw or felt hat with a broad brim and tall crown, worn especially in Mexico and the American Southwest.
[Spanish, perhaps from sombra, shade, probably from sombrar, to shade, from Late Latin subumbrāre, to cast a shadow; see SOMBER.]
sombrero