Gringo

As copied and pasted wholesale from wikipedia:
The word gringo was first recorded in Volume II of the Diccionario castellano con las voces de Ciencias y Artes y sus correspondientes en las 3 lenguas francesa, latina e italiana (Castilian Dictionary including the Words of the Sciences and the Arts, and their Correspondents in 3 Languages: French, Latin, and Italian, 1787), by Terreros y Pando, wherein it is defined as:

TLDR a non spanish speaker on the american continent.

"The term gringo comes from the green uniforms of american soldiers in the mexican american war."
"no it doesnt you hamster loving buffoon, it translates from the spanish word for greek, and was coopted to refer to all citizens of the USA because the country's name translates poorly"
"oh"