That's curious!
THE STORY BEHIND THE WORDSJeansThe word jeans come from gene fustian. Fustian was the name of the cotton cloth that was used for making jeans, and gene was an adjective in old English meaning that comes from Genoa, the Italian city where the fustian was made. In time the spelling became jeans and they became very popular around 1960.
La palabra jeans proviene de gene fustian. Fustian era el nombre de la tela de algodón que se utilizaba para fabricar los jeans, y gene era un adjetivo en inglés antiguo que significa que proviene de Génova, la ciudad italiana donde se fabricaba la tela fustian. Con el tiempo la escritura pasó a ser jeans y se volvieron muy populares hacia 1960.