proper noun/koatθakoˈalkos/
Coatzacoalcos (a major port city in the state of Veracruz, Mexico); Coatzacoalcos (a municipality of Verazcruz, Mexico); Coatzacoalcos (a large river which flows through the city of Coatzacoalcos, Veracruz, and into the Gulf of Mexico)
From Classical Nahuatl cōātl (“snake”) + tzacualli (“enclosure, something covered”) + -co (“a locative suffix”).