morrillo

back of the neck; the fleshy back part of the neck of cattle or tuna

“Juana la sintió en su alma, como un toro siente en el morrillo el primer par de banderillas” — Juana felt it in her soul, like a bull feels the banderilla in the back of its neck

Etymology tree Spanish morro Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -lus Latin -ellus Old Spanish -iello Spanish -illo Spanish morrillo From morro + -illo.