pecho
/ˈpet͡ʃo/ · A2 · noun · m
chest
🫁 pecho ~ pectoral: both from Latin pectus, chest
Latin pectus (chest) became pecho in Spanish, with ct turning into ch, the same shift as noche from noctem and leche from lactem. English kept the Latin root in pectoral, the pecs, so pecho is where your pecs are.