internal, inpatient (hospital resident patient), boarder; resident (at a school/institution)
Soy el Dr. Klinger, médico interno.
I'm Dr. Klinger, an internal medicine physician.
— Los falsificadores (2007)
Soy interno, y dentro de poco estará lista la cena.
I'm an inmate, and dinner will be ready soon.
— Suspiria (1977)
This is for internal use.
Un error interno se ha producido.
An internal error has occurred.
Ponlo en tu bolsillo interno, al lado del corazón.
Put it in your inside pocket, next to your heart.