cráneo
/ˈkɾaneo/ · B1 · noun · m
skull
💀 cráneo = cranium, both from Greek kranion, skull
Spanish cráneo and English cranium share one root, the Greek kranion. Swap cranium's -ium ending for -eo and you have the Spanish word. Stress falls on the first syllable: CRÁ-ne-o.