The Spanish word 'montera' refers to a traditional Spanish cap, particularly one worn by bullfighters. It comes from combining the Spanish word 'monte' (meaning 'mountain') with the feminine suffix '-era'. The word 'monte' itself derives from the Latin word 'mons', which also meant 'mountain'. The cap likely got its name either from its peaked shape resembling a small mountain or because it was originally worn by mountain dwellers.

Several common Spanish words share the same Latin root 'mons': 'monte' (mountain, hill), 'montaña' (mountain), 'montañoso' (mountainous), and 'montañero/a' (mountaineer). All these words maintain a connection to the concept of mountains or elevated terrain.

English speakers might recognize the connection to words like 'mount', 'mountain', and 'montane' (relating to mountains), which all come from the same Latin root 'mons'. The word 'paramount' (meaning supreme or highest in importance) also contains this root, literally meaning 'above mountain'. Even the word 'amount' is related, as it originally referred to moving upward, like climbing a mountain.