This is the 13717th most frequent Spanish word.
rosarina
A female native or resident of Rosario, Argentina.
Here, 'rosarina' is used as a noun to describe that the person is a female inhabitant of Rosario.
La rosarina ganó el torneo de tenis como representante de su ciudad.
The woman from Rosario won the tennis tournament representing her city.
In this instance, 'rosarina' works as an adjective modifying 'amiga', describing her origin from Rosario.
Nuestra amiga rosarina nos enseñó cómo se hace el mate en su región.
Our friend from Rosario taught us how mate is made in her region.
Here, 'rosarino', the masculine noun form, denotes that the restaurant has characteristics or styles associated with Rosario.